diff --git a/src/Common/IO.php b/src/Common/IO.php
new file mode 100644
index 0000000..074b26c
--- /dev/null
+++ b/src/Common/IO.php
@@ -0,0 +1,135 @@
+<?php
+
+namespace Acquia\Drupal\RecommendedSettings\Common;
+
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Question\ChoiceQuestion;
+use Symfony\Component\Console\Question\Question;
+
+/**
+ * An extension of \Robo\Common\IO.
+ */
+trait IO {
+
+  /**
+   * Writes text to screen, without decoration.
+   *
+   * @param string $text
+   *   The text to write.
+   */
+  protected function say($text) {
+    $this->writeln($text);
+  }
+
+  /**
+   * Writes text to screen with big, loud decoration.
+   *
+   * @param string $text
+   *   The text to write.
+   * @param int $length
+   *   The length at which text should be wrapped.
+   * @param string $color
+   *   The color of the text.
+   */
+  protected function yell($text, $length = 40, $color = 'green') {
+    $format = "<fg=white;bg=$color;options=bold>%s</fg=white;bg=$color;options=bold>";
+    $this->formattedOutput($text, $length, $format);
+  }
+
+  /**
+   * Format text as a question.
+   *
+   * @param string $message
+   *   The question text.
+   *
+   * @return string
+   *   The formatted question text.
+   */
+  protected function formatQuestion($message) {
+    return "<question> $message</question> ";
+  }
+
+  /**
+   * Asks the user a multiple-choice question.
+   *
+   * @param string $question
+   *   The question text.
+   * @param array $options
+   *   An array of available options.
+   * @param mixed $default
+   *   Default.
+   *
+   * @return string
+   *   The chosen option.
+   */
+  protected function askChoice($question, array $options, $default = NULL) {
+    return $this->doAsk(new ChoiceQuestion($this->formatQuestion($question),
+      $options, $default));
+  }
+
+  /**
+   * Asks a required question.
+   *
+   * @param string $message
+   *   The question text.
+   *
+   * @return string
+   *   The response.
+   */
+  protected function askRequired($message) {
+    $question = new Question($this->formatQuestion($message));
+    $question->setValidator(function ($answer) {
+      if (empty($answer)) {
+        throw new \RuntimeException(
+          'You must enter a value!'
+        );
+      }
+
+      return $answer;
+    });
+    return $this->doAsk($question);
+  }
+
+  /**
+   * Writes an array to the screen as a formatted table.
+   *
+   * @param array $array
+   *   The unformatted array.
+   * @param array $headers
+   *   The headers for the array. Defaults to ['Property','Value'].
+   */
+  protected function printArrayAsTable(
+    array $array,
+    array $headers = ['Property', 'Value']
+  ) {
+    $table = new Table($this->output);
+    $table->setHeaders($headers)
+      ->setRows(ArrayManipulator::convertArrayToFlatTextArray($array))
+      ->render();
+  }
+
+  /**
+   * Writes a particular configuration key's value to the log.
+   *
+   * @param array $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 = '', $verbosity = OutputInterface::VERBOSITY_VERY_VERBOSE) {
+    if ($this->output()->getVerbosity() >= $verbosity) {
+      if ($prefix) {
+        $this->output()->writeln("<comment>Configuration for $prefix:</comment>");
+        foreach ($array as $key => $value) {
+          $array["$prefix.$key"] = $value;
+          unset($array[$key]);
+        }
+      }
+      $this->printArrayAsTable($array);
+    }
+  }
+
+}
diff --git a/src/Config/ConfigInitializer.php b/src/Config/ConfigInitializer.php
index f38a115..1e9aaaf 100644
--- a/src/Config/ConfigInitializer.php
+++ b/src/Config/ConfigInitializer.php
@@ -4,6 +4,7 @@
 
 use Acquia\Drupal\RecommendedSettings\Helpers\EnvironmentDetector;
 use Consolidation\Config\Config;
+use Consolidation\Config\ConfigInterface;
 use Consolidation\Config\Loader\YamlConfigLoader;
 
 /**
@@ -11,7 +12,7 @@
  */
 class ConfigInitializer {
 
-  const DEFAULT_CONFIG_FILE_PATH = "/config/build.yml";
+  const CONFIG_FILE_PATH = "/config/build.yml";
 
   /**
    * Config.
@@ -39,25 +40,13 @@ class ConfigInitializer {
    * @param string $site
    *   Drupal site uri. Ex: site1, site2 etc.
    */
-  public function __construct(string $site = "default") {
-    $this->config = new Config();
+  public function __construct(ConfigInterface $config) {
+    $this->config = $config;
     $this->loader = new YamlConfigLoader();
     $this->processor = new YamlConfigProcessor();
-    $this->setSite($site);
     $this->initialize();
   }
 
-  /**
-   * Set site.
-   *
-   * @param string $site
-   *   Given Site.
-   */
-  public function setSite(string $site): void {
-    $this->site = $site;
-    $this->config->set('site', $site);
-  }
-
   /**
    * Initialize.
    */
@@ -72,6 +61,7 @@ public function initialize(): ConfigInitializer {
    */
   public function loadAllConfig(): ConfigInitializer {
     $this->loadDefaultConfig();
+    $this->loadProjectConfig();
     return $this;
   }
 
@@ -81,7 +71,18 @@ public function loadAllConfig(): ConfigInitializer {
   protected function loadDefaultConfig(): ConfigInitializer {
     $this->addConfig($this->config->export());
     $drsDirectory = dirname(__FILE__, 3);
-    $this->processor->extend($this->loader->load($drsDirectory . self::DEFAULT_CONFIG_FILE_PATH));
+    $this->processor->extend($this->loader->load($drsDirectory . self::CONFIG_FILE_PATH));
+    return $this;
+  }
+
+  /**
+   * Load config.
+   *
+   * @return $this
+   *   Config.
+   */
+  public function loadProjectConfig(): ConfigInitializer {
+    $this->processor->extend($this->loader->load($this->config->get('repo.root') . self::CONFIG_FILE_PATH));
     return $this;
   }
 
@@ -102,6 +103,9 @@ public function addConfig(array $data): Config {
    * @throws \ReflectionException
    */
   public function determineEnvironment(): string {
+    if ($this->config->get('environment')) {
+      return $this->config->get('environment');
+    }
     if (EnvironmentDetector::isCiEnv()) {
       return 'ci';
     }
diff --git a/src/Config/DefaultConfig.php b/src/Config/DefaultConfig.php
new file mode 100644
index 0000000..14b838d
--- /dev/null
+++ b/src/Config/DefaultConfig.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Acquia\Drupal\RecommendedSettings\Config;
+
+use Consolidation\Config\Config;
+use Grasmash\YamlExpander\YamlExpander;
+use Psr\Log\NullLogger;
+
+/**
+ * The configuration for settings.
+ */
+class DefaultConfig extends Config {
+
+  /**
+   * Config Constructor.
+   *
+   * @param string[] $data
+   *   Data array, if available.
+   */
+  public function __construct(string $drupal_root) {
+    parent::__construct();
+    $repo_root = dirname($drupal_root);
+    $this->set('repo.root', $repo_root);
+    $this->set('docroot', $drupal_root);
+    $this->set('composer.bin', $repo_root . '/vendor/bin');
+    $this->set('site', 'default');
+    $this->set('tmp.dir', sys_get_temp_dir());
+  }
+
+}
diff --git a/src/Config/DefaultDrushConfig.php b/src/Config/DefaultDrushConfig.php
new file mode 100644
index 0000000..d4e4db0
--- /dev/null
+++ b/src/Config/DefaultDrushConfig.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Acquia\Drupal\RecommendedSettings\Config;
+
+use Consolidation\Config\Config;
+use Drush\Config\DrushConfig;
+use Grasmash\YamlExpander\YamlExpander;
+use Psr\Log\NullLogger;
+
+/**
+ * The configuration for settings.
+ */
+class DefaultDrushConfig extends Config {
+
+  /**
+   * Config Constructor.
+   *
+   * @param string[] $data
+   *   Data array, if available.
+   */
+  public function __construct(DrushConfig $config) {
+    $uri = $config->get("options.uri") ?? "default";
+    $config->set('repo.root', $config->get("runtime.project"));
+    $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',  $config->get("options.uri"));
+    if ($config->get("options.ansi")) {
+      $config->set('drush.ansi', $config->get("options.ansi"));
+    }
+    $config->set('drush.bin', $config->get("runtime.drush-script"));
+    $config->setDefault('drush.alias', "self");
+    parent::__construct($config->export());
+  }
+
+}
diff --git a/src/Drush/Commands/BaseDrushCommands.php b/src/Drush/Commands/BaseDrushCommands.php
index 35a58f0..3efb29f 100644
--- a/src/Drush/Commands/BaseDrushCommands.php
+++ b/src/Drush/Commands/BaseDrushCommands.php
@@ -4,8 +4,12 @@
 
 namespace Acquia\Drupal\RecommendedSettings\Drush\Commands;
 
+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;
@@ -20,6 +24,7 @@
 use Robo\Contract\IOAwareInterface;
 use Robo\LoadAllTasks;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Process\Process;
 
 /**
@@ -31,19 +36,17 @@ class BaseDrushCommands extends DrushCommands implements ConfigAwareInterface, L
   use LoadAllTasks;
   use ConfigAwareTrait;
   use LoadTasks;
+  use IO;
 
   /**
    * {@inheritdoc}
    */
   #[CLI\Hook(type: HookManager::INITIALIZE)]
   public function init(InputInterface $input, AnnotationData $annotationData): void {
-    if ($this->getConfig()->get("options.uri")) {
-      $this->getConfig()->setDefault('drush.uri', $this->getConfig()->get("options.uri"));
-    }
-    if ($this->getConfig()->get("options.ansi")) {
-      $this->getConfig()->setDefault('drush.ansi', $this->getConfig()->get("options.ansi"));
-    }
-    $this->getConfig()->setDefault('drush.bin', $this->getConfig()->get("runtime.drush-script"));
+    $config = new DefaultDrushConfig($this->getConfig());
+    $configInitializer = new ConfigInitializer($config);
+    $config = $configInitializer->loadAllConfig()->processConfig();
+    $this->setConfig($config);
   }
 
   /**
@@ -72,7 +75,7 @@ protected function invokeCommands(array $commands) {
    * Invokes a single Drush command.
    *
    * @param string $command_name
-   *   The name of the command, e.g., 'tests:behat:run'.
+   *   The name of the command, e.g., 'status'.
    * @param array $args
    *   An array of arguments to pass to the command.
    *
@@ -80,25 +83,24 @@ protected function invokeCommands(array $commands) {
    */
   protected function invokeCommand(string $command_name, array $args = []): void {
     $options = $this->input()->getOptions();
+    $drushOptions = [];
     foreach ($options as $key => $value) {
-      if ($value === NULL || $key === "define") {
+      if ($value === NULL || $key === "define" || $value == FALSE) {
         unset($options[$key]);
       }
     }
     $process = Drush::drush(Drush::aliasManager()->getSelf(), $command_name, $args, $options);
-    $this->output->writeln("<comment> > " . $process->getCommandLine() . "</comment>");
-    $process->run($process->showRealtime()->hideStderr());
-    $errorOutput = $process->getErrorOutput();
-    if ($errorOutput) {
-      if (!$process->isSuccessful()) {
-        $errorOutput = preg_replace("/^\s+|\s+$/", "", $errorOutput);
-        throw new SettingsException($errorOutput);
+    $this->output->writeln("<comment> > " . $command_name. "</comment>");
+    $output = $this->output();
+    $process->setTty(Process::isTtySupported());
+    $process->run(static function ($type, $buffer) use ($output, $process) {
+      if (Process::ERR === $type) {
+        $output->getErrorOutput()->write($buffer, false, OutputInterface::OUTPUT_NORMAL);
       }
       else {
-        $errorOutput = str_replace("[success]", "<bg=green;options=bold;fg=white>[success]</>", $errorOutput);
-        $this->io()->write($errorOutput);
+        $output->write($buffer, false, OutputInterface::OUTPUT_NORMAL);
       }
-    }
+    });
   }
 
 }
diff --git a/src/Settings.php b/src/Settings.php
index 73d14fd..8becaea 100644
--- a/src/Settings.php
+++ b/src/Settings.php
@@ -3,9 +3,11 @@
 namespace Acquia\Drupal\RecommendedSettings;
 
 use Acquia\Drupal\RecommendedSettings\Config\ConfigInitializer;
+use Acquia\Drupal\RecommendedSettings\Config\DefaultConfig;
 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.
@@ -53,10 +55,10 @@ class Settings {
   /**
    * Constructs the plugin object.
    */
-  public function __construct(string $drupalRoot, string $site = "default") {
+  public function __construct(string $drupal_root, string $site = "default") {
+    $this->config = new DefaultConfig($drupal_root);
     $this->fileSystem = new Filesystem();
-    $this->drupalRoot = $drupalRoot;
-    $this->site = $site;
+    $this->config->set("site", $site);
   }
 
   /**
@@ -72,7 +74,7 @@ public static function getPluginPath(): string {
   protected function copyGlobalSettings(): bool {
     return $this->fileSystem->copyFiles(
       self::getPluginPath() . "/settings/global",
-      $this->drupalRoot . "/sites/settings"
+      $this->config->get("docroot") . "/sites/settings"
     );
   }
 
@@ -82,7 +84,7 @@ protected function copyGlobalSettings(): bool {
   protected function copySiteSettings(): bool {
     return $this->fileSystem->copyFiles(
       self::getPluginPath() . "/settings/site",
-      $this->drupalRoot . "/sites/" . $this->site . "/settings"
+      $this->config->get("docroot") . "/sites/" . $this->config->get("site") . "/settings"
     );
   }
 
@@ -96,45 +98,48 @@ protected function copySiteSettings(): bool {
    */
   public function generate(array $overrideData = []): void {
     try {
-      $site = $this->site;
+      // Replace variables in local.settings.php file.
+      $config = new ConfigInitializer($this->config);
+      $config = $config->loadAllConfig();
+      if ($overrideData) {
+        $config->addConfig($overrideData);
+      }
+      $config = $config->processConfig();
+
+      $site = $config->get("site");
+      $docroot = $config->get("docroot");
       $this->copyGlobalSettings();
       $this->copySiteSettings();
 
       // Create settings.php file from default.settings.php.
       $this->fileSystem->copyFile(
-      $this->drupalRoot . "/sites/default/default.settings.php",
-      $this->drupalRoot . "/sites/$site/settings.php"
+        $docroot . "/sites/default/default.settings.php",
+        $docroot . "/sites/$site/settings.php"
       );
 
       // Append `require acquia-recommended.settings.php` code block in
       // site specific settings.php file (if it does not exist).
       $this->appendIfMatchesCollect(
-       $this->drupalRoot . "/sites/$site/settings.php",
+        $docroot . "/sites/$site/settings.php",
        '#vendor/acquia/drupal-recommended-settings/settings/acquia-recommended.settings.php#', PHP_EOL . 'require DRUPAL_ROOT . "/../vendor/acquia/drupal-recommended-settings/settings/acquia-recommended.settings.php";' . PHP_EOL
       );
       $this->appendIfMatchesCollect(
-       $this->drupalRoot . "/sites/$site/settings.php",
+        $docroot . "/sites/$site/settings.php",
        '#Do not include additional settings here#', $this->settingsWarning . PHP_EOL
       );
 
       // Create local.settings.php file from default.local.settings.php.
       $this->fileSystem->copyFile(
-       $this->drupalRoot . "/sites/$site/settings/default.local.settings.php",
-       $this->drupalRoot . "/sites/$site/settings/local.settings.php"
+        $docroot . "/sites/$site/settings/default.local.settings.php",
+        $docroot . "/sites/$site/settings/local.settings.php"
       );
 
-      // Replace variables in local.settings.php file.
-      $config = new ConfigInitializer();
-      $config = $config->loadAllConfig();
-      if ($overrideData) {
-        $config->addConfig($overrideData);
-      }
-      $settings = new SettingsConfig($config->processConfig()->export());
-      $settings->replaceFileVariables($this->drupalRoot . "/sites/$site/settings/local.settings.php");
+      $settings = new SettingsConfig($config->export());
+      $settings->replaceFileVariables($docroot . "/sites/$site/settings/local.settings.php");
 
       // The config directory for given site must exists, otherwise Drupal will
       // add database credentials to settings.php.
-      $this->fileSystem->ensureDirectoryExists($this->drupalRoot . "/../config/$site");
+      $this->fileSystem->ensureDirectoryExists($docroot . "/../config/$site");
     }
     catch (\Exception $e) {
       throw new SettingsException($e);