diff --git a/phpcs.xml.dist b/phpcs.xml.dist
index 2877304..218fcb7 100644
--- a/phpcs.xml.dist
+++ b/phpcs.xml.dist
@@ -19,6 +19,6 @@
   <exclude-pattern>var/</exclude-pattern>
   <exclude-pattern>vendor/</exclude-pattern>
 
-  <rule ref="AcquiaDrupalStrict"/>
+  <rule ref="AcquiaPHP"/>
 
 </ruleset>
diff --git a/settings/site/default.local.settings.php b/settings/site/default.local.settings.php
index 0ff57b7..b5a27b3 100644
--- a/settings/site/default.local.settings.php
+++ b/settings/site/default.local.settings.php
@@ -6,7 +6,6 @@
  */
 
 use Acquia\Drupal\RecommendedSettings\Helpers\EnvironmentDetector;
-use Drupal\Component\Assertion\Handle;
 
 $db_name = '${drupal.db.database}';
 
diff --git a/src/Common/Executor.php b/src/Common/Executor.php
index cdde858..e4c1e2e 100644
--- a/src/Common/Executor.php
+++ b/src/Common/Executor.php
@@ -2,14 +2,17 @@
 
 namespace Acquia\Drupal\RecommendedSettings\Common;
 
+use Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException;
 use Acquia\Drupal\RecommendedSettings\Robo\Config\ConfigAwareTrait;
 use GuzzleHttp\Client;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerAwareTrait;
 use Robo\Collection\CollectionBuilder;
+use Robo\Common\ProcessExecutor;
 use Robo\Contract\ConfigAwareInterface;
-use Robo\Contract\IOAwareInterface;
 use Robo\Robo;
+use Robo\Task\Base\Exec;
+use Robo\Tasks;
 use Symfony\Component\Process\Process;
 
 /**
@@ -26,13 +29,13 @@ class Executor implements ConfigAwareInterface, LoggerAwareInterface {
   /**
    * A copy of the Robo builder.
    *
-   * @var \Acquia\Blt\Robo\BltTasks*/
-  protected $builder;
+   */
+  protected \Robo\Tasks $builder;
 
   /**
    * Executor constructor.
    *
-   * @param \Robo\Collection\CollectionBuilder $builder
+   * @param \Robo\Tasks $builder
    *   This is a copy of the collection builder, required for calling various
    *   Robo tasks from non-command files.
    */
@@ -43,10 +46,10 @@ public function __construct(CollectionBuilder $builder) {
   /**
    * Returns $this->builder.
    *
-   * @return \Acquia\Blt\Robo\BltTasks
+   * @return \Robo\Tasks
    *   The builder.
    */
-  public function getBuilder() {
+  public function getBuilder(): Tasks {
     return $this->builder;
   }
 
@@ -60,7 +63,7 @@ public function getBuilder() {
    * @return \Robo\Task\Base\Exec
    *   The task. You must call run() on this to execute it!
    */
-  public function taskExec($command) {
+  public function taskExec(string $command): Exec {
     return $this->builder->taskExec($command);
   }
 
@@ -73,7 +76,7 @@ public function taskExec($command) {
    * @return \Robo\Common\ProcessExecutor
    *   The unexecuted process.
    */
-  public function drush($command) {
+  public function drush(mixed $command): ProcessExecutor {
     $drush_array = [];
     // @todo Set to silent if verbosity is less than very verbose.
     $drush_array[] = $this->getConfigValue('composer.bin') . DIRECTORY_SEPARATOR . "drush";
@@ -108,7 +111,7 @@ public function drush($command) {
    * @return \Robo\Common\ProcessExecutor
    *   The unexecuted command.
    */
-  public function execute($command) {
+  public function execute(mixed $command): ProcessExecutor {
     // Backwards compatibility check for legacy commands.
     if (!is_array($command)) {
       $this->say($command);
@@ -132,7 +135,7 @@ public function execute($command) {
    * @return \Robo\Common\ProcessExecutor
    *   The unexecuted command.
    */
-  public function executeShell($command) {
+  public function executeShell(string $command): ProcessExecutor {
     $process_executor = Robo::process(Process::fromShellCommandline($command));
     return $process_executor->dir($this->getConfigValue('repo.root'))
       ->printOutput(FALSE)
@@ -146,7 +149,7 @@ public function executeShell($command) {
    * @param string $port
    *   The port number.
    */
-  public function killProcessByPort($port) {
+  public function killProcessByPort(string $port): void {
     $this->logger->info("Killing all processes on port '$port'...");
     // This is allowed to fail.
     // @todo Replace with standardized call to Symfony Process.
@@ -162,7 +165,7 @@ public function killProcessByPort($port) {
    * @param string $name
    *   The name of the process.
    */
-  public function killProcessByName($name) {
+  public function killProcessByName(string $name): void {
     $this->logger->info("Killing all processing containing string '$name'...");
     // This is allowed to fail.
     // @todo Replace with standardized call to Symfony Process.
@@ -179,7 +182,7 @@ public function killProcessByName($name) {
    * @param string $url
    *   The URL to wait for.
    */
-  public function waitForUrlAvailable($url) {
+  public function waitForUrlAvailable(string $url): void {
     $this->wait([$this, 'checkUrl'], [$url], "Waiting for non-50x response from $url...");
   }
 
@@ -190,7 +193,7 @@ public function waitForUrlAvailable($url) {
    *
    * @param callable $callable
    *   The method/function to wait for a TRUE response from.
-   * @param array $args
+   * @param string[] $args
    *   Arguments to pass to $callable.
    * @param string $message
    *   The message to display when this function is called.
@@ -200,7 +203,7 @@ public function waitForUrlAvailable($url) {
    *
    * @throws \Exception
    */
-  public function wait(callable $callable, array $args, $message = '') {
+  public function wait(callable $callable, array $args, string $message = ''): bool {
     $maxWait = 60 * 1000;
     $checkEvery = 1 * 1000;
     $start = microtime(TRUE) * 1000;
@@ -225,7 +228,7 @@ public function wait(callable $callable, array $args, $message = '') {
       usleep($checkEvery * 1000);
     }
 
-    throw new BltException("Timed out.");
+    throw new SettingsException("Timed out.");
   }
 
   /**
@@ -237,7 +240,7 @@ public function wait(callable $callable, array $args, $message = '') {
    * @return bool
    *   TRUE if URL responded with a non-50x response.
    */
-  public function checkUrl($url) {
+  public function checkUrl(string $url): bool {
     try {
       $client = new Client();
       $res = $client->request('GET', $url, [
diff --git a/src/Common/IO.php b/src/Common/IO.php
index 074b26c..03a7102 100644
--- a/src/Common/IO.php
+++ b/src/Common/IO.php
@@ -18,7 +18,7 @@ trait IO {
    * @param string $text
    *   The text to write.
    */
-  protected function say($text) {
+  protected function say(string $text): void {
     $this->writeln($text);
   }
 
@@ -32,7 +32,7 @@ protected function say($text) {
    * @param string $color
    *   The color of the text.
    */
-  protected function yell($text, $length = 40, $color = 'green') {
+  protected function yell(string $text, int $length = 40, string $color = 'green'): void {
     $format = "<fg=white;bg=$color;options=bold>%s</fg=white;bg=$color;options=bold>";
     $this->formattedOutput($text, $length, $format);
   }
@@ -46,7 +46,7 @@ protected function yell($text, $length = 40, $color = 'green') {
    * @return string
    *   The formatted question text.
    */
-  protected function formatQuestion($message) {
+  protected function formatQuestion(string $message): string {
     return "<question> $message</question> ";
   }
 
@@ -55,7 +55,7 @@ protected function formatQuestion($message) {
    *
    * @param string $question
    *   The question text.
-   * @param array $options
+   * @param string[] $options
    *   An array of available options.
    * @param mixed $default
    *   Default.
@@ -63,7 +63,7 @@ protected function formatQuestion($message) {
    * @return string
    *   The chosen option.
    */
-  protected function askChoice($question, array $options, $default = NULL) {
+  protected function askChoice(string $question, array $options, mixed $default = NULL): string {
     return $this->doAsk(new ChoiceQuestion($this->formatQuestion($question),
       $options, $default));
   }
@@ -77,7 +77,7 @@ protected function askChoice($question, array $options, $default = NULL) {
    * @return string
    *   The response.
    */
-  protected function askRequired($message) {
+  protected function askRequired(string $message): string {
     $question = new Question($this->formatQuestion($message));
     $question->setValidator(function ($answer) {
       if (empty($answer)) {
@@ -94,15 +94,15 @@ protected function askRequired($message) {
   /**
    * Writes an array to the screen as a formatted table.
    *
-   * @param array $array
+   * @param string[] $array
    *   The unformatted array.
-   * @param array $headers
+   * @param string[] $headers
    *   The headers for the array. Defaults to ['Property','Value'].
    */
   protected function printArrayAsTable(
     array $array,
     array $headers = ['Property', 'Value']
-  ) {
+  ): void {
     $table = new Table($this->output);
     $table->setHeaders($headers)
       ->setRows(ArrayManipulator::convertArrayToFlatTextArray($array))
@@ -112,14 +112,14 @@ protected function printArrayAsTable(
   /**
    * Writes a particular configuration key's value to the log.
    *
-   * @param array $array
+   * @param string[] $array
    *   The configuration.
    * @param string $prefix
    *   A prefix to add to each row in the configuration.
    * @param int $verbosity
    *   The verbosity level at which to display the logged message.
    */
-  protected function logConfig(array $array, $prefix = '', $verbosity = OutputInterface::VERBOSITY_VERY_VERBOSE) {
+  protected function logConfig(array $array, string $prefix = '', int $verbosity = OutputInterface::VERBOSITY_VERY_VERBOSE): void {
     if ($this->output()->getVerbosity() >= $verbosity) {
       if ($prefix) {
         $this->output()->writeln("<comment>Configuration for $prefix:</comment>");
diff --git a/src/Common/StringManipulator.php b/src/Common/StringManipulator.php
index d06c172..443fbd8 100644
--- a/src/Common/StringManipulator.php
+++ b/src/Common/StringManipulator.php
@@ -18,7 +18,7 @@ class StringManipulator {
    * @return string
    *   The trimmed text.
    */
-  public static function trimEndingLines($text, $num_lines) {
+  public static function trimEndingLines(string $text, int $num_lines): string {
     return implode("\n",
       array_slice(explode("\n", $text), 0, count($text) - $num_lines));
   }
@@ -34,7 +34,7 @@ public static function trimEndingLines($text, $num_lines) {
    * @return string
    *   The trimmed text.
    */
-  public static function trimStartingLines($text, $num_lines) {
+  public static function trimStartingLines(string $text, int $num_lines): string {
     return implode("\n", array_slice(explode("\n", $text), $num_lines));
   }
 
@@ -43,19 +43,19 @@ public static function trimStartingLines($text, $num_lines) {
    *
    * @param string $identifier
    *   Identifier.
-   * @param array $filter
+   * @param string[] $filter
    *   Filter.
    *
    * @return mixed
    *   Safe string.
    */
-  public static function convertStringToMachineSafe($identifier, array $filter = [
+  public static function convertStringToMachineSafe(string $identifier, array $filter = [
     ' ' => '_',
     '-' => '_',
     '/' => '_',
     '[' => '_',
     ']' => '',
-  ]) {
+  ]): mixed {
     $identifier = str_replace(array_keys($filter), array_values($filter), $identifier);
     // Valid characters are:
     // - a-z (U+0030 - U+0039)
@@ -86,7 +86,7 @@ public static function convertStringToMachineSafe($identifier, array $filter = [
    * @return mixed
    *   Prefix.
    */
-  public static function convertStringToPrefix($string) {
+  public static function convertStringToPrefix(string $string): mixed {
     $words = explode(' ', $string);
     $prefix = '';
     foreach ($words as $word) {
@@ -101,10 +101,10 @@ public static function convertStringToPrefix($string) {
    * @param string $command
    *   The command string to conver to array.
    *
-   * @return array
+   * @return string[]
    *   Command array.
    */
-  public static function commandConvert($command) {
+  public static function commandConvert(string $command): array {
     return explode(" ", $command);
   }
 
@@ -114,7 +114,7 @@ public static function commandConvert($command) {
    * @return string
    *   The deprecation warning.
    */
-  public static function stringToArrayMsg() {
+  public static function stringToArrayMsg(): string {
     return "Deprecation Warning: this command is passing a command string and should pass a command array.";
   }
 
diff --git a/src/Config/DefaultConfig.php b/src/Config/DefaultConfig.php
index 14b838d..bf9f0d6 100644
--- a/src/Config/DefaultConfig.php
+++ b/src/Config/DefaultConfig.php
@@ -3,8 +3,6 @@
 namespace Acquia\Drupal\RecommendedSettings\Config;
 
 use Consolidation\Config\Config;
-use Grasmash\YamlExpander\YamlExpander;
-use Psr\Log\NullLogger;
 
 /**
  * The configuration for settings.
diff --git a/src/Config/DefaultDrushConfig.php b/src/Config/DefaultDrushConfig.php
index d4e4db0..637eca7 100644
--- a/src/Config/DefaultDrushConfig.php
+++ b/src/Config/DefaultDrushConfig.php
@@ -4,8 +4,6 @@
 
 use Consolidation\Config\Config;
 use Drush\Config\DrushConfig;
-use Grasmash\YamlExpander\YamlExpander;
-use Psr\Log\NullLogger;
 
 /**
  * The configuration for settings.
@@ -24,7 +22,7 @@ public function __construct(DrushConfig $config) {
     $config->set('docroot', $config->get("options.root"));
     $config->set('composer.bin', $config->get("drush.vendor-dir") . '/bin');
     $config->set('drush.uri', $config->get("options.uri"));
-    $config->set('site',  $config->get("options.uri"));
+    $config->set('site', $config->get("options.uri"));
     if ($config->get("options.ansi")) {
       $config->set('drush.ansi', $config->get("options.ansi"));
     }
diff --git a/src/Drush/Commands/BaseDrushCommands.php b/src/Drush/Commands/BaseDrushCommands.php
index 3efb29f..cd921df 100644
--- a/src/Drush/Commands/BaseDrushCommands.php
+++ b/src/Drush/Commands/BaseDrushCommands.php
@@ -7,9 +7,7 @@
 use Acquia\Drupal\RecommendedSettings\Common\IO;
 use Acquia\Drupal\RecommendedSettings\Config\ConfigInitializer;
 use Acquia\Drupal\RecommendedSettings\Config\DefaultDrushConfig;
-use Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException;
 use Acquia\Drupal\RecommendedSettings\Robo\Config\ConfigAwareTrait;
-use Acquia\Drupal\RecommendedSettings\Robo\Tasks\DrushTask;
 use Acquia\Drupal\RecommendedSettings\Robo\Tasks\LoadTasks;
 use Consolidation\AnnotatedCommand\AnnotationData;
 use Consolidation\AnnotatedCommand\Hooks\HookManager;
@@ -52,12 +50,12 @@ public function init(InputInterface $input, AnnotationData $annotationData): voi
   /**
    * Invokes an array of Drush commands.
    *
-   * @param array $commands
+   * @param string[] $commands
    *   An array of Symfony commands to invoke, e.g., 'tests:behat:run'.
    *
    * @throws \Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException
    */
-  protected function invokeCommands(array $commands) {
+  protected function invokeCommands(array $commands): void {
     foreach ($commands as $key => $value) {
       if (is_numeric($key)) {
         $command = $value;
@@ -76,7 +74,7 @@ protected function invokeCommands(array $commands) {
    *
    * @param string $command_name
    *   The name of the command, e.g., 'status'.
-   * @param array $args
+   * @param string[] $args
    *   An array of arguments to pass to the command.
    *
    * @throws \Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException
@@ -90,15 +88,15 @@ protected function invokeCommand(string $command_name, array $args = []): void {
       }
     }
     $process = Drush::drush(Drush::aliasManager()->getSelf(), $command_name, $args, $options);
-    $this->output->writeln("<comment> > " . $command_name. "</comment>");
+    $this->output->writeln("<comment> > " . $command_name . "</comment>");
     $output = $this->output();
     $process->setTty(Process::isTtySupported());
-    $process->run(static function ($type, $buffer) use ($output, $process) {
+    $process->run(static function ($type, $buffer) use ($output, $process): void {
       if (Process::ERR === $type) {
-        $output->getErrorOutput()->write($buffer, false, OutputInterface::OUTPUT_NORMAL);
+        $output->getErrorOutput()->write($buffer, FALSE, OutputInterface::OUTPUT_NORMAL);
       }
       else {
-        $output->write($buffer, false, OutputInterface::OUTPUT_NORMAL);
+        $output->write($buffer, FALSE, OutputInterface::OUTPUT_NORMAL);
       }
     });
   }
diff --git a/src/Drush/Commands/HooksDrushCommands.php b/src/Drush/Commands/HooksDrushCommands.php
index 3832e51..7abe043 100644
--- a/src/Drush/Commands/HooksDrushCommands.php
+++ b/src/Drush/Commands/HooksDrushCommands.php
@@ -5,9 +5,6 @@
 namespace Acquia\Drupal\RecommendedSettings\Drush\Commands;
 
 use Acquia\Drupal\RecommendedSettings\Helpers\EnvironmentDetector;
-use Consolidation\AnnotatedCommand\CommandData;
-use Consolidation\AnnotatedCommand\Events\CustomEventAwareInterface;
-use Consolidation\AnnotatedCommand\Events\CustomEventAwareTrait;
 use Consolidation\AnnotatedCommand\Hooks\HookManager;
 use Drush\Attributes as CLI;
 use Drush\Commands\DrushCommands;
diff --git a/src/Drush/Commands/MultisiteDrushCommands.php b/src/Drush/Commands/MultisiteDrushCommands.php
index ca7c123..a1045c0 100644
--- a/src/Drush/Commands/MultisiteDrushCommands.php
+++ b/src/Drush/Commands/MultisiteDrushCommands.php
@@ -16,9 +16,7 @@
 use Drush\Boot\BootstrapManager;
 use Drush\Boot\DrupalBootLevels;
 use Drush\Commands\DrushCommands;
-use Drush\Drush;
 use Psr\Container\ContainerInterface as DrushContainer;
-use Symfony\Component\Filesystem\Path;
 
 /**
  * A Drush command to generate settings.php for Multisite.
@@ -127,13 +125,14 @@ protected function postGenerateSettings(CommandData $commandData): void {
    *
    * @param string $site_name
    *   The site name.
-   *
-   * @return array
+   * @param string[] $default_credentials
+   *   The default db credentials.
+   * @return string[]
    *   The database specs.
    */
-  private function askDbCredentials(string $site_name, array $defaultCredentials): array {
+  private function askDbCredentials(string $site_name, array $default_credentials): array {
     $shouldAsk = $this->io()->confirm(dt("Would you like to configure the local database credentials?"));
-    $credentials = $defaultCredentials;
+    $credentials = $default_credentials;
     if ($shouldAsk) {
       $credentials['database'] = $this->io()->ask("Local database name", $site_name);
       $credentials['username'] = $this->io()->ask("Local database user", $credentials['username']);
diff --git a/src/Drush/Traits/SiteUriTrait.php b/src/Drush/Traits/SiteUriTrait.php
index f9f26a6..6f5115f 100644
--- a/src/Drush/Traits/SiteUriTrait.php
+++ b/src/Drush/Traits/SiteUriTrait.php
@@ -16,10 +16,15 @@ trait SiteUriTrait {
    *
    * This code copied from SiteInstallCommands.php file.
    *
+   * @param string $root
+   *   The path to drupal docroot.
+   * @param string $uri
+   *   The site uri.
+   *
    * @return array|false|mixed|string|string[]
    *   Returns the site uri.
    */
-  private function getSitesSubdirFromUri($root, $uri): mixed {
+  private function getSitesSubdirFromUri(string $root, string $uri): mixed {
     $dir = strtolower($uri);
     // Always accept simple uris (e.g. 'dev', 'stage', etc.)
     if (preg_match('#^[a-z0-9_-]*$#', $dir)) {
diff --git a/src/Robo/Config/ConfigAwareTrait.php b/src/Robo/Config/ConfigAwareTrait.php
index 8f7436f..c03386e 100644
--- a/src/Robo/Config/ConfigAwareTrait.php
+++ b/src/Robo/Config/ConfigAwareTrait.php
@@ -22,7 +22,7 @@ trait ConfigAwareTrait {
    * @return mixed|null
    *   The config value, or else the default value if they key does not exist.
    */
-  protected function getConfigValue($key, $default = NULL) {
+  protected function getConfigValue(string $key, mixed $default = NULL): mixed {
     if (!$this->getConfig()) {
       return $default;
     }
diff --git a/src/Robo/Inspector/Inspector.php b/src/Robo/Inspector/Inspector.php
index fe92a2e..dc596b0 100644
--- a/src/Robo/Inspector/Inspector.php
+++ b/src/Robo/Inspector/Inspector.php
@@ -12,7 +12,6 @@
 use Acquia\Drupal\RecommendedSettings\Common\IO;
 use Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException;
 use Acquia\Drupal\RecommendedSettings\Robo\Config\ConfigAwareTrait;
-use Consolidation\Config\Loader\YamlConfigLoader;
 use League\Container\ContainerAwareInterface;
 use League\Container\ContainerAwareTrait;
 use Psr\Log\LoggerAwareInterface;
@@ -25,7 +24,7 @@
 /**
  * Inspects various details about the current project.
  *
- * @package Acquia\Blt\Robo\Common
+ * @package Acquia\Drupal\RecommendedSettings\Common
  */
 class Inspector implements BuilderAwareInterface, ConfigAwareInterface, ContainerAwareInterface, LoggerAwareInterface {
 
@@ -38,56 +37,44 @@ class Inspector implements BuilderAwareInterface, ConfigAwareInterface, Containe
   /**
    * Process executor.
    *
-   * @var \Acquia\Blt\Robo\Common\Executor
    */
-  protected $executor;
+  protected \Acquia\Drupal\RecommendedSettings\Common\Executor $executor;
 
   /**
    * Is MYSQL available.
    *
-   * @var null
    */
-  protected $isMySqlAvailable = NULL;
+  protected bool $isMySqlAvailable;
 
   /**
    * Is PostgreSQL available.
    *
-   * @var null
    */
-  protected $isPostgreSqlAvailable = NULL;
+  protected bool $isPostgreSqlAvailable;
 
   /**
    * Is Sqlite available.
    *
-   * @var null
    */
-  protected $isSqliteAvailable = NULL;
+  protected bool $isSqliteAvailable;
 
-  /**
-   * DrupalVM status.
-   *
-   * @var array
-   */
-  protected $drupalVmStatus = NULL;
 
   /**
    * Filesystem.
    *
-   * @var \Symfony\Component\Filesystem\Filesystem
    */
-  protected $fs;
+  protected \Symfony\Component\Filesystem\Filesystem $fs;
 
   /**
    * Warnings were issued.
    *
-   * @var bool
    */
-  protected $warningsIssued = FALSE;
+  protected bool $warningsIssued = FALSE;
 
   /**
    * The constructor.
    *
-   * @param \Acquia\Blt\Robo\Common\Executor $executor
+   * @param \Acquia\Drupal\RecommendedSettings\Common\Executor $executor
    *   Process executor.
    */
   public function __construct(Executor $executor) {
@@ -101,14 +88,14 @@ public function __construct(Executor $executor) {
    * @return \Symfony\Component\Filesystem\Filesystem
    *   Filesystem.
    */
-  public function getFs() {
+  public function getFs(): \Symfony\Component\Filesystem\Filesystem {
     return $this->fs;
   }
 
   /**
    * Clear state.
    */
-  public function clearState() {
+  public function clearState(): void {
     $this->isMySqlAvailable = NULL;
     $this->isPostgreSqlAvailable = NULL;
     $this->isSqliteAvailable = NULL;
@@ -120,7 +107,7 @@ public function clearState() {
    * @return bool
    *   TRUE if file exists.
    */
-  public function isRepoRootPresent() {
+  public function isRepoRootPresent(): bool {
     return file_exists($this->getConfigValue('repo.root'));
   }
 
@@ -130,7 +117,7 @@ public function isRepoRootPresent() {
    * @return bool
    *   TRUE if file exists.
    */
-  public function isDocrootPresent() {
+  public function isDocrootPresent(): bool {
     return file_exists($this->getConfigValue('docroot'));
   }
 
@@ -140,7 +127,7 @@ public function isDocrootPresent() {
    * @return bool
    *   TRUE if file exists.
    */
-  public function isDrupalSettingsFilePresent() {
+  public function isDrupalSettingsFilePresent(): bool {
     return file_exists($this->getConfigValue('drupal.settings_file'));
   }
 
@@ -150,7 +137,7 @@ public function isDrupalSettingsFilePresent() {
    * @return bool
    *   TRUE if file exists.
    */
-  public function isHashSaltPresent() {
+  public function isHashSaltPresent(): bool {
     return file_exists($this->getConfigValue('repo.root') . '/salt.txt');
   }
 
@@ -160,17 +147,17 @@ public function isHashSaltPresent() {
    * @return bool
    *   TRUE if file exists.
    */
-  public function isDrupalLocalSettingsFilePresent() {
+  public function isDrupalLocalSettingsFilePresent(): bool {
     return file_exists($this->getConfigValue('drupal.local_settings_file'));
   }
 
   /**
-   * Determines if Drupal settings.php contains required BLT includes.
+   * Determines if Drupal settings.php contains required DRS includes.
    *
    * @return bool
-   *   TRUE if settings.php is valid for BLT usage.
+   *   TRUE if settings.php is valid for DRS usage.
    */
-  public function isDrupalSettingsFileValid() {
+  public function isDrupalSettingsFileValid(): bool {
     $settings_file_contents = file_get_contents($this->getConfigValue('drupal.settings_file'));
     if (!strstr($settings_file_contents,
       '/../vendor/acquia/blt/settings/blt.settings.php')
@@ -189,7 +176,7 @@ public function isDrupalSettingsFileValid() {
    * @return bool
    *   TRUE if Drupal is installed.
    */
-  public function isDrupalInstalled() {
+  public function isDrupalInstalled(): bool {
     $this->logger->debug("Verifying that Drupal is installed...");
     $output = $this->getDrushStatus()['bootstrap'] ?? '';
     $installed = $output === 'Successful';
@@ -201,10 +188,10 @@ public function isDrupalInstalled() {
   /**
    * Gets the result of `drush status`.
    *
-   * @return array
+   * @return string[]
    *   The result of `drush status`.
    */
-  public function getDrushStatus() {
+  public function getDrushStatus(): array {
     $docroot = $this->getConfigValue('docroot');
     $status_info = (array) json_decode($this->executor->drush([
       'status',
@@ -222,7 +209,7 @@ public function getDrushStatus() {
    * @return mixed
    *   Status.
    */
-  public function getStatus() {
+  public function getStatus(): mixed {
     $status = $this->getDrushStatus();
     if (array_key_exists('php-conf', $status)) {
       foreach ($status['php-conf'] as $key => $conf) {
@@ -258,7 +245,7 @@ public function getStatus() {
    * @return bool
    *   TRUE if alias is valid.
    */
-  public function isDrushAliasValid($alias) {
+  public function isDrushAliasValid(string $alias): bool {
     return $this->executor->drush([
       "site:alias",
       "@$alias",
@@ -274,7 +261,7 @@ public function isDrushAliasValid($alias) {
    * @return bool
    *   TRUE if MySQL is available.
    */
-  public function isDatabaseAvailable() {
+  public function isDatabaseAvailable(): bool {
     $db = $this->getDrushStatus()['db-driver'];
     switch ($db) {
       case 'mysql':
@@ -286,7 +273,7 @@ public function isDatabaseAvailable() {
       case 'sqlite':
         return $this->isSqliteAvailable();
     }
-
+    return FALSE;
   }
 
   /**
@@ -297,7 +284,7 @@ public function isDatabaseAvailable() {
    * @return bool
    *   TRUE if MySQL is available.
    */
-  public function isMySqlAvailable() {
+  public function isMySqlAvailable(): bool {
     if (is_null($this->isMySqlAvailable)) {
       $this->isMySqlAvailable = $this->getMySqlAvailable();
     }
@@ -313,7 +300,7 @@ public function isMySqlAvailable() {
    * @return bool
    *   TRUE if MySQL is available.
    */
-  public function getMySqlAvailable() {
+  public function getMySqlAvailable(): bool {
     $this->logger->debug("Verifying that MySQL is available...");
     /** @var \Robo\Result $result */
     $result = $this->executor->drush(["sqlq", "SHOW DATABASES"])
@@ -330,7 +317,7 @@ public function getMySqlAvailable() {
    * @return bool
    *   TRUE if MySQL is available.
    */
-  public function isPostgreSqlAvailable() {
+  public function isPostgreSqlAvailable(): bool {
     if (is_null($this->isPostgreSqlAvailable)) {
       $this->isPostgreSqlAvailable = $this->getPostgreSqlAvailable();
     }
@@ -346,7 +333,7 @@ public function isPostgreSqlAvailable() {
    * @return bool
    *   TRUE if PostgreSQL is available.
    */
-  public function getPostgreSqlAvailable() {
+  public function getPostgreSqlAvailable(): bool {
     $this->logger->debug("Verifying that PostgreSQL is available...");
     /** @var \Robo\Result $result */
     $result = $this->executor->drush(["sqlq \"SHOW DATABASES\""])
@@ -363,7 +350,7 @@ public function getPostgreSqlAvailable() {
    * @return bool
    *   TRUE if Sqlite is available.
    */
-  public function isSqliteAvailable() {
+  public function isSqliteAvailable(): bool {
     if (is_null($this->isSqliteAvailable)) {
       $this->isSqliteAvailable = $this->getSqliteAvailable();
     }
@@ -379,7 +366,7 @@ public function isSqliteAvailable() {
    * @return bool
    *   TRUE if Sqlite is available.
    */
-  public function getSqliteAvailable() {
+  public function getSqliteAvailable(): bool {
     $this->logger->debug("Verifying that Sqlite is available...");
     /** @var \Robo\Result $result */
     $result = $this->executor->drush(["sqlq", ".tables"])
@@ -394,7 +381,7 @@ public function getSqliteAvailable() {
    * @return bool
    *   TRUE if Lando configuration exists.
    */
-  public function isLandoConfigPresent() {
+  public function isLandoConfigPresent(): bool {
     return file_exists($this->getConfigValue('repo.root') . '/.lando.yml');
   }
 
@@ -404,7 +391,7 @@ public function isLandoConfigPresent() {
    * @return string
    *   The version of Composer.
    */
-  public function getComposerVersion() {
+  public function getComposerVersion(): string {
     $version = $this->executor->execute(["composer", "--version"])
       ->interactive(FALSE)
       ->silent(TRUE)
@@ -423,7 +410,7 @@ public function getComposerVersion() {
    * @return bool
    *   TRUE if minimum version is satisfied.
    */
-  public function isComposerMinimumVersionSatisfied($minimum_version) {
+  public function isComposerMinimumVersionSatisfied(string $minimum_version): bool {
     // phpcs:ignore
     exec("composer --version | cut -d' ' -f3", $output, $exit_code);
     if (version_compare($output[0], $minimum_version, '>=')) {
@@ -441,7 +428,7 @@ public function isComposerMinimumVersionSatisfied($minimum_version) {
    * @return bool
    *   TRUE if the command exists, otherwise FALSE.
    */
-  public function commandExists($command) {
+  public function commandExists(string $command): bool {
     // phpcs:ignore
     exec("command -v $command >/dev/null 2>&1", $output, $exit_code);
     return $exit_code == 0;
@@ -456,7 +443,7 @@ public function commandExists($command) {
    * @return bool
    *   TRUE if minimum version is satisfied.
    */
-  public function isGitMinimumVersionSatisfied($minimum_version) {
+  public function isGitMinimumVersionSatisfied(string $minimum_version): bool {
     // phpcs:ignore
     exec("git --version | cut -d' ' -f3", $output, $exit_code);
     if (version_compare($output[0], $minimum_version, '>=')) {
@@ -471,7 +458,7 @@ public function isGitMinimumVersionSatisfied($minimum_version) {
    * @return bool
    *   TRUE if configured, FALSE otherwise.
    */
-  public function isGitUserSet() {
+  public function isGitUserSet(): bool {
     // phpcs:ignore
     exec("git config user.name", $output, $name_not_set);
     // phpcs:ignore
@@ -485,18 +472,18 @@ public function isGitUserSet() {
    * @return \Acquia\Blt\Robo\Config\BltConfig
    *   The local Behat configuration.
    */
-//  public function getLocalBehatConfig() {
-//    $behat_local_config_file = $this->getConfigValue('repo.root') . '/tests/behat/local.yml';
-//
-//    $behat_local_config = new BltConfig();
-//    $loader = new YamlConfigLoader();
-//    $processor = new YamlConfigProcessor();
-//    $processor->extend($loader->load($behat_local_config_file));
-//    $processor->extend($loader->load($this->getConfigValue('repo.root') . '/tests/behat/behat.yml'));
-//    $behat_local_config->replace($processor->export());
-//
-//    return $behat_local_config;
-//  }
+  //  public function getLocalBehatConfig() {
+  //    $behat_local_config_file = $this->getConfigValue('repo.root') . '/tests/behat/local.yml';
+  //
+  //    $behat_local_config = new BltConfig();
+  //    $loader = new YamlConfigLoader();
+  //    $processor = new YamlConfigProcessor();
+  //    $processor->extend($loader->load($behat_local_config_file));
+  //    $processor->extend($loader->load($this->getConfigValue('repo.root') . '/tests/behat/behat.yml'));
+  //    $behat_local_config->replace($processor->export());
+  //
+  //    return $behat_local_config;
+  //  }
 
   /**
    * Returns an array of required Behat files, as defined by Behat config.
@@ -505,10 +492,10 @@ public function isGitUserSet() {
    * and bootstrap dir on the local file system. All of these files are
    * required for behat to function properly.
    *
-   * @return array
+   * @return string[]
    *   An array of required Behat configuration files.
    */
-  public function getBehatConfigFiles() {
+  public function getBehatConfigFiles(): array {
     $behat_local_config = $this->getLocalBehatConfig();
 
     return [
@@ -523,17 +510,20 @@ public function getBehatConfigFiles() {
    * @return bool
    *   TRUE if all required Behat files exist.
    */
-  public function areBehatConfigFilesPresent() {
+  public function areBehatConfigFilesPresent(): bool {
     return $this->filesExist($this->getBehatConfigFiles());
   }
 
   /**
    * Determines if all file in a given array exist.
    *
+   * @param string[] $files
+   *   An array of files.
+   *
    * @return bool
    *   TRUE if all files exist.
    */
-  public function filesExist($files) {
+  public function filesExist(array $files): bool {
     foreach ($files as $file) {
       if (!file_exists($file)) {
         $this->logger->warning("Required file $file does not exist.");
@@ -550,7 +540,7 @@ public function filesExist($files) {
    * @return string
    *   The current schema version.
    */
-  public function getCurrentSchemaVersion() {
+  public function getCurrentSchemaVersion(): string {
     if (file_exists($this->getConfigValue('blt.config-files.schema-version'))) {
       $version = trim(file_get_contents($this->getConfigValue('blt.config-files.schema-version')));
     }
@@ -564,7 +554,7 @@ public function getCurrentSchemaVersion() {
   /**
    * Is schema version up to date?
    */
-  public function isSchemaVersionUpToDate() {
+  public function isSchemaVersionUpToDate(): bool {
     return $this->getCurrentSchemaVersion() >= $this->getContainer()->get('updater')->getLatestUpdateMethodVersion();
   }
 
@@ -572,9 +562,9 @@ public function isSchemaVersionUpToDate() {
    * Issues warnings to user if their local environment is mis-configured.
    *
    * @param string $command_name
-   *   The name of the BLT Command being executed.
+   *   The name of the DRS Command being executed.
    */
-  public function issueEnvironmentWarnings($command_name) {
+  public function issueEnvironmentWarnings(string $command_name): void {
     if (!$this->warningsIssued) {
       $this->warnIfPhpOutdated();
 
@@ -585,13 +575,13 @@ public function issueEnvironmentWarnings($command_name) {
   /**
    * Throws an exception if the minimum PHP version is not met.
    *
-   * @throws \Acquia\Blt\Robo\Exceptions\BltException
+   * @throws \Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException
    */
-  public function warnIfPhpOutdated() {
+  public function warnIfPhpOutdated(): void {
     $minimum_php_version = 7;
     $current_php_version = phpversion();
     if ($current_php_version < $minimum_php_version) {
-      throw new SettingsException("BLT requires PHP $minimum_php_version or greater. You are using $current_php_version.");
+      throw new SettingsException("DRS requires PHP $minimum_php_version or greater. You are using $current_php_version.");
     }
   }
 
@@ -601,7 +591,7 @@ public function warnIfPhpOutdated() {
    * @return bool
    *   TRUE if config is identical.
    */
-  public function isActiveConfigIdentical() {
+  public function isActiveConfigIdentical(): bool {
     $result = $this->executor->drush(["config:status"])->run();
     $message = trim($result->getMessage());
     $this->logger->debug("Config status check results:");
diff --git a/src/Robo/Inspector/InspectorAwareInterface.php b/src/Robo/Inspector/InspectorAwareInterface.php
index bad2540..f1e1e72 100644
--- a/src/Robo/Inspector/InspectorAwareInterface.php
+++ b/src/Robo/Inspector/InspectorAwareInterface.php
@@ -10,7 +10,7 @@ interface InspectorAwareInterface {
   /**
    * Sets $this->inspector.
    *
-   * @param \Acquia\Blt\Robo\Inspector\Inspector $inspector
+   * @param \Acquia\Drupal\RecommendedSettings\Robo\Inspector\Inspector $inspector
    *   The inspector.
    *
    * @return $this
diff --git a/src/Robo/Inspector/InspectorAwareTrait.php b/src/Robo/Inspector/InspectorAwareTrait.php
index b5522f7..0f5fcb2 100644
--- a/src/Robo/Inspector/InspectorAwareTrait.php
+++ b/src/Robo/Inspector/InspectorAwareTrait.php
@@ -10,14 +10,13 @@ trait InspectorAwareTrait {
   /**
    * The inspector.
    *
-   * @var \Acquia\Blt\Robo\Inspector\Inspector
    */
-  private $inspector;
+  private Inspector $inspector;
 
   /**
    * Sets $this->inspector.
    */
-  public function setInspector(Inspector $inspector) {
+  public function setInspector(Inspector $inspector): self {
     $this->inspector = $inspector;
 
     return $this;
@@ -26,10 +25,10 @@ public function setInspector(Inspector $inspector) {
   /**
    * Gets $this->inspector.
    *
-   * @return \Acquia\Blt\Robo\Inspector\Inspector
+   * @return \Acquia\Drupal\RecommendedSettings\Robo\Inspector\Inspector
    *   The inspector.
    */
-  public function getInspector() {
+  public function getInspector(): Inspector {
     return $this->inspector;
   }
 
diff --git a/src/Robo/Tasks/DrushTask.php b/src/Robo/Tasks/DrushTask.php
index 5ba6aef..045f85a 100644
--- a/src/Robo/Tasks/DrushTask.php
+++ b/src/Robo/Tasks/DrushTask.php
@@ -29,81 +29,72 @@ class DrushTask extends CommandStack {
   /**
    * Site alias to prepend to each command.
    *
-   * @var string
    */
-  protected $alias;
+  protected string $alias;
 
   /**
    * Directory to execute the command from.
    *
-   * @var string
    *
    * @see ExecTrait::$workingDirectory
    */
-  protected $dir;
+  protected string $dir;
 
   /**
    * Site uri to append uri option to each command.
    *
-   * @var string
    */
-  protected $uri;
+  protected string $uri;
 
   /**
    * Indicates if the command output should be verbose.
    *
-   * @var bool
    */
-  protected $verbose;
+  protected bool $verbose;
 
   /**
    * Indicates if the command output should be very verbose.
    *
-   * @var bool
    */
-  protected $veryVerbose;
+  protected bool $veryVerbose;
 
   /**
    * Indicates if the command output should be debug verbosity.
    *
-   * @var bool
    */
-  protected $debug;
+  protected bool $debug;
 
   /**
    * Defaults init.
    *
-   * @var bool
    */
-  protected $defaultsInitialized;
+  protected bool $defaultsInitialized;
 
   /**
    * Additional directory paths to search for drush commands.
    *
-   * @var string
    */
-  protected $include;
+  protected string $include;
 
   /**
    * Add or not the --ansi option.
    *
-   * @var bool
    */
-  protected $ansi;
+  protected bool $ansi;
 
   /**
    * Drush commands to execute when task is run.
    *
-   * @var array
+   * @var string[]
    */
-  protected $commands;
+  protected array $commands;
 
   /**
    * Options for each drush command.
    *
-   * @var array
+   * @var string[]
    */
-  protected $options;
+  protected array $options;
 
   /**
    * Adds the given drush command to a stack.
@@ -113,7 +104,7 @@ class DrushTask extends CommandStack {
    *
    * @return $this
    */
-  public function drush($command) {
+  public function drush(string $command) {
     // Clear out options associated with previous drush command.
     $this->setOptionsForLastCommand();
 
@@ -137,7 +128,7 @@ public function drush($command) {
    *
    * @return $this
    */
-  public function alias($alias) {
+  public function alias(string $alias) {
     $this->alias = $alias;
     return $this;
   }
@@ -150,7 +141,7 @@ public function alias($alias) {
    *
    * @return $this
    */
-  public function uri($uri) {
+  public function uri(string $uri) {
     $this->uri = $uri;
 
     return $this;
@@ -166,7 +157,7 @@ public function uri($uri) {
    *
    * @see ExecTrait::$workingDirectory
    */
-  public function dir($dir) {
+  public function dir(string $dir) {
     $this->dir = $dir;
     parent::dir($dir);
 
@@ -181,7 +172,7 @@ public function dir($dir) {
    *
    * @return $this
    */
-  public function verbose($verbose) {
+  public function verbose(string|bool $verbose) {
     $this->verbose = $this->mixedToBool($verbose);
     return $this;
   }
@@ -194,7 +185,7 @@ public function verbose($verbose) {
    *
    * @return $this
    */
-  public function veryVerbose($verbose) {
+  public function veryVerbose(string|bool $verbose) {
     $this->veryVerbose = $this->mixedToBool($verbose);
     return $this;
   }
@@ -207,7 +198,7 @@ public function veryVerbose($verbose) {
    *
    * @return $this
    */
-  public function debug($verbose) {
+  public function debug(string|bool $verbose) {
     $this->debug = $this->mixedToBool($verbose);
     return $this;
   }
@@ -220,7 +211,7 @@ public function debug($verbose) {
    *
    * @return $this
    */
-  public function includePath($path) {
+  public function includePath(string $path) {
     $this->include = $path;
     return $this;
   }
@@ -233,7 +224,7 @@ public function includePath($path) {
    *
    * @return $this
    */
-  public function ansi($ansi) {
+  public function ansi(bool $ansi) {
     $this->ansi = $ansi;
     return $this;
   }
@@ -241,7 +232,7 @@ public function ansi($ansi) {
   /**
    * Sets up drush defaults using config.
    */
-  protected function init() {
+  protected function init(): void {
     if ($this->getConfig()->get('drush.bin')) {
       $this->executable = str_replace(' ', '\\ ', $this->getConfig()->get('drush.bin'));
     }
@@ -278,7 +269,7 @@ protected function init() {
    *   TRUE/FALSE as per PHP's cast to boolean ruleset, with the exception that
    *   a string value not equal to 'yes' or 'true' will evaluate to FALSE.
    */
-  protected function mixedToBool($mixedVar) {
+  protected function mixedToBool(mixed $mixedVar): bool {
     if (is_string($mixedVar)) {
       $boolVar = ($mixedVar === 'yes' || $mixedVar === 'true');
     }
@@ -291,7 +282,7 @@ protected function mixedToBool($mixedVar) {
   /**
    * Associates arguments with their corresponding drush command.
    */
-  protected function setOptionsForLastCommand() {
+  protected function setOptionsForLastCommand(): void {
     if (isset($this->commands)) {
       $numberOfCommands = count($this->commands);
       $correspondingCommand = $numberOfCommands - 1;
@@ -306,7 +297,7 @@ protected function setOptionsForLastCommand() {
   /**
    * Set the options to be used for each drush command in the stack.
    */
-  protected function setGlobalOptions() {
+  protected function setGlobalOptions(): void {
     if (isset($this->uri) && !empty($this->uri)) {
       $this->option('uri', $this->uri);
     }
@@ -360,8 +351,17 @@ protected function setGlobalOptions() {
 
   /**
    * Overriding CommandArguments::option to default option separator to '='.
+   *
+   * @param string $option
+   *   An option key.
+   * @param string $value
+   *   Value for option.
+   * @param string $separator
+   *   The separator for options.
+   *
+   * @return $this
    */
-  public function option($option, $value = NULL, $separator = '=') {
+  public function option(string $option, string $value = NULL, string $separator = '=') {
     return $this->traitOption($option, $value, $separator);
   }
 
@@ -370,6 +370,8 @@ public function option($option, $value = NULL, $separator = '=') {
    *
    * Make note that if stopOnFail() is TRUE, then result data isn't returned!
    * Maybe this should be changed.
+   *
+   * {@inheritdoc}
    */
   public function run() {
     $this->setupExecution();
@@ -406,7 +408,7 @@ public function run() {
   /**
    * Adds drush commands with their corresponding options to stack.
    */
-  protected function setupExecution() {
+  protected function setupExecution(): void {
     $this->setOptionsForLastCommand();
     $this->setGlobalOptions();
 
diff --git a/src/Robo/Tasks/LoadTasks.php b/src/Robo/Tasks/LoadTasks.php
index defe95b..b07895a 100644
--- a/src/Robo/Tasks/LoadTasks.php
+++ b/src/Robo/Tasks/LoadTasks.php
@@ -13,8 +13,8 @@ trait LoadTasks {
    * @return \Acquia\Drupal\RecommendedSettings\Robo\Tasks\DrushTask
    *   Drush task.
    */
-  protected function taskDrush() {
-    /** @var \Acquia\Blt\Robo\Tasks\DrushTask $task */
+  protected function taskDrush(): DrushTask {
+    /** @var \Acquia\Drupal\RecommendedSettings\Robo\Tasks\DrushTask $task */
     $task = $this->task(DrushTask::class);
     /** @var \Symfony\Component\Console\Output\OutputInterface $output */
     $output = $this->output();
diff --git a/src/Settings.php b/src/Settings.php
index 8becaea..ef3118c 100644
--- a/src/Settings.php
+++ b/src/Settings.php
@@ -7,7 +7,6 @@
 use Acquia\Drupal\RecommendedSettings\Config\SettingsConfig;
 use Acquia\Drupal\RecommendedSettings\Exceptions\SettingsException;
 use Acquia\Drupal\RecommendedSettings\Helpers\Filesystem;
-use Consolidation\Config\Config;
 
 /**
  * Core class of the plugin.