diff --git a/.github/workflows/integration_tests.yml b/.github/workflows/integration_tests.yml
new file mode 100644
index 00000000..36eeb989
--- /dev/null
+++ b/.github/workflows/integration_tests.yml
@@ -0,0 +1,50 @@
+name: Reusable action of Integration tests
+
+on: 
+  workflow_call:
+    secrets:
+      CI_USER_TOKEN:
+        required: true
+      TRAVIS_COM_TOKEN:
+        required: true
+
+jobs:
+  integration_tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        # You should create a personal access token and store it in your repository
+        token: ${{ secrets.CI_USER_TOKEN }}
+        repository: 'optimizely/travisci-tools'
+        path: 'home/runner/travisci-tools'
+        ref: 'master'
+    - name: set SDK Branch if PR
+      if: ${{ github.event_name == 'pull_request' }}
+      run: |
+        echo "SDK_BRANCH=${{ github.head_ref }}" >> $GITHUB_ENV
+    - name: set SDK Branch if not pull request
+      if: ${{ github.event_name != 'pull_request' }}
+      run: |
+        echo "SDK_BRANCH=${{ github.ref_name }}" >> $GITHUB_ENV
+        echo "TRAVIS_BRANCH=${{ github.ref_name }}" >> $GITHUB_ENV
+    - name: Trigger build
+      env:
+        SDK: swift
+        TESTAPP_TAG: master
+        BUILD_NUMBER: ${{ github.run_id }}
+        TESTAPP_BRANCH: master
+        GITHUB_TOKEN: ${{ secrets.CI_USER_TOKEN }}
+        TRAVIS_EVENT_TYPE: ${{ github.event_name }}
+        TRAVIS_REPO_SLUG: ${{ github.repository }}
+        TRAVIS_PULL_REQUEST_SLUG: ${{ github.repository }}
+        UPSTREAM_REPO: ${{ github.repository }}
+        TRAVIS_COMMIT: ${{ github.sha }}
+        TRAVIS_PULL_REQUEST_SHA: ${{ github.event.pull_request.head.sha }}
+        TRAVIS_PULL_REQUEST: ${{ github.event.pull_request.number }}
+        UPSTREAM_SHA: ${{ github.sha }}
+        TRAVIS_COM_TOKEN: ${{ secrets.TRAVIS_COM_TOKEN }}
+        EVENT_MESSAGE: ${{ github.event.message }}
+        HOME: 'home/runner'
+      run: |
+        home/runner/travisci-tools/trigger-script-with-status-update.sh
diff --git a/.github/workflows/lint_markdown.yml b/.github/workflows/lint_markdown.yml
new file mode 100644
index 00000000..e3e90314
--- /dev/null
+++ b/.github/workflows/lint_markdown.yml
@@ -0,0 +1,19 @@
+name: Reusable action of linting markdown files
+
+on: [workflow_call]
+
+jobs:
+  lint_markdown:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '2.6'
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Install gem and Run tests
+      run: |
+        cd ../../
+        gem install awesome_bot
+        find . -type f -name '*.md' -exec awesome_bot {} \;
diff --git a/.github/workflows/source_clear_cron.yml b/.github/workflows/source_clear_cron.yml
new file mode 100644
index 00000000..4a9b2dcf
--- /dev/null
+++ b/.github/workflows/source_clear_cron.yml
@@ -0,0 +1,18 @@
+name: Source clear
+
+on:
+  push:
+    branches: [ master ]
+  schedule:
+    # Runs "weekly"
+    - cron: '0 0 * * 0'
+
+jobs:
+  source_clear:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Source clear scan
+        env:
+          SRCCLR_API_TOKEN: ${{ secrets.SRCCLR_API_TOKEN }}
+        run: curl -sSL https://download.sourceclear.com/ci.sh | bash -s - scan
diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
new file mode 100644
index 00000000..1ac7229d
--- /dev/null
+++ b/.github/workflows/swift.yml
@@ -0,0 +1,89 @@
+name: Swift
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+    inputs:
+      PREP:
+        required: false
+        type: boolean
+        description: prepare to release
+      RELEASE:
+        required: false
+        type: boolean
+        description: release
+
+env:
+  VERSION: 3.10.1
+
+jobs:
+
+  lint_markdown_files:
+    uses: optimizely/swift-sdk/.github/workflows/lint_markdown.yml@yasir/gitAction
+
+  integration_tests:
+    if: "${{ github.event.inputs.PREP == '' && github.event.inputs.RELEASE == '' }}"
+    uses: optimizely/swift-sdk/.github/workflows/integration_tests.yml@yasir/gitAction
+    secrets:
+      CI_USER_TOKEN: ${{ secrets.CI_USER_TOKEN }}
+      TRAVIS_COM_TOKEN: ${{ secrets.TRAVIS_COM_TOKEN }}
+
+  lint: 
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: '12.4'
+    - env:
+        SRCCLR_API_TOKEN: ${{ secrets.SRCCLR_API_TOKEN }}
+      run: |
+        gem install cocoapods -v '1.9.3'
+        pod spec lint --quick
+        curl -sSL https://download.sourceclear.com/ci.sh | bash
+
+  unittests: 
+    if: "${{ github.event.inputs.PREP == '' && github.event.inputs.RELEASE == '' }}" 
+    uses: optimizely/swift-sdk/.github/workflows/unit_tests.yml@yasir/gitAction
+
+  prepare_for_release:
+    runs-on: macos-latest
+    if: "${{ github.event.inputs.PREP == 'true' && github.event_name == 'workflow_dispatch' }}" 
+    steps:
+    - uses: actions/checkout@v3
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: '12.4'
+    - id: prepare_for_release
+      name: Prepare for release
+      env:
+        HOME: 'home/runner'
+        REPO_SLUG: ${{ github.repository }}
+        BRANCH: ${{ github.ref_name }}
+        GITHUB_USER: optibot
+        GITHUB_TOKEN: ${{ secrets.CI_USER_TOKEN }}
+      run: |
+        gem install cocoapods -v '1.9.3'
+        Scripts/run_prep.sh
+    - name: Check prepare for release failure
+      if: steps.prepare_for_release.conclusion == 'failure'
+      run: cat /tmp/build.out
+
+  release:
+    if: "${{github.event.inputs.RELEASE == 'true' && github.event_name == 'workflow_dispatch' }}"
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: '12.4'
+    - name: Push to cocoapods.org
+      env:
+        GITHUB_TOKEN: ${{ secrets.CI_USER_TOKEN }}
+        BRANCH: ${{ github.ref_name }}
+      run: |
+        gem install cocoapods -v '1.9.3'
+        Scripts/run_release.sh
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
new file mode 100644
index 00000000..36a9b8b7
--- /dev/null
+++ b/.github/workflows/unit_tests.yml
@@ -0,0 +1,95 @@
+name: Reusable action of Unit tests
+
+on: [workflow_call]
+
+env:
+  COVERAGE_DIR: ./COVERAGE
+
+jobs:
+  unittests:
+    runs-on: macos-10.15
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: 14.4
+            device: "iPhone 11"
+            scheme: "OptimizelySwiftSDK-iOS"
+            test_sdk: "iphonesimulator"
+            platform: "iOS Simulator"
+            os_type: "iOS"
+            simulator_xcode_version: 12.4
+          - os: 13.3
+            device: "iPhone 8"
+            scheme: "OptimizelySwiftSDK-iOS"
+            test_sdk: "iphonesimulator"
+            platform: "iOS Simulator"
+            os_type: "iOS"
+            simulator_xcode_version: 11.3.1
+          - os: 12.4
+            device: "iPad Air"
+            scheme: "OptimizelySwiftSDK-iOS"
+            test_sdk: "iphonesimulator"
+            platform: "iOS Simulator"
+            os_type: "iOS"
+            simulator_xcode_version: 10.3
+          - os: 12.4
+            device: "Apple TV 4K"
+            scheme: "OptimizelySwiftSDK-tvOS"
+            test_sdk: "appletvsimulator"
+            platform: "tvOS Simulator"
+            os_type: "tvOS"
+            simulator_xcode_version: 10.3
+    steps:
+      - uses: actions/checkout@v3
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: 12.4
+      - name: set SDK Branch if PR
+        if: ${{ github.event_name == 'pull_request' }}
+        run: |
+          echo "BRANCH=${{ github.base_ref }}" >> $GITHUB_ENV
+      - name: set SDK Branch if not pull request
+        if: ${{ github.event_name != 'pull_request' }}
+        run: |
+          echo "BRANCH=${{ github.ref_name }}" >> $GITHUB_ENV
+      - id: unit_tests
+        env:
+          SCHEME: ${{ matrix.scheme }}
+          TEST_SDK: ${{ matrix.test_sdk }}
+          PLATFORM: ${{ matrix.platform }}
+          OS: ${{ matrix.os }}
+          OS_TYPE: ${{ matrix.os_type }}
+          SIMULATOR_XCODE_VERSION: ${{ matrix.simulator_xcode_version }}
+          NAME: ${{ matrix.device }}
+        run: |
+          gem install coveralls-lcov
+          gem install cocoapods -v '1.9.3'
+          pod repo update
+          pod install
+          HOMEBREW_NO_INSTALL_CLEANUP=true brew update && brew install jq
+          Scripts/prepare_simulator.sh
+          Scripts/run_unit_tests.sh
+      - name: Check on failures (Archive Test Results)
+        uses: actions/upload-artifact@v3
+        if: steps.unit_tests.outcome != 'success'
+        with:
+          name: build-logs-${{ matrix.device }}-${{ matrix.os }}
+          path: build/Logs
+      - # - report coverage for PR and iPhone 11 only (avoid redundant ones)
+        # - use Xcode12.4+ (older Xcode reports a wrong number)
+        name: Check on success
+        id: coveralls
+        if: ${{ steps.unit_tests.outcome == 'success' && env.BRANCH == 'master' && env.PLATFORM == 'iOS Simulator' && env.NAME == 'iPhone 11' }}
+        env:
+          PLATFORM: ${{ matrix.platform }}
+          NAME: ${{ matrix.device }}
+        run: |
+          Scripts/prepare_coveralls_report.sh
+          sleep 5
+      - name: Upload coveralls report
+        if: steps.coveralls.outcome == 'success'
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ./xccov2lcov/lcov.info
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 83c87e49..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,136 +0,0 @@
-language: minimal
-os: linux
-
-# Integration tests need to run first to reset the PR build status to pending
-stages:
-  - name: 'Source Clear'
-  - name: 'Lint markdown files'
-  - name: 'Trigger Integration Tests'
-    if: env(RUN_COMPAT_SUITE) = true and env(PREP) IS NOT present and env(RELEASE) IS NOT present
-  - name: 'Lint'
-  - name: 'Unit Tests'
-    if: env(PREP) IS NOT present and env(RELEASE) IS NOT present
-  - name: 'Prepare for release'
-    if: env(PREP) = true and type = api
-  - name: 'Release'
-    if: env(RELEASE) = true and type = api
-
-jobs:
-  include:
-    - stage: 'Lint markdown files'
-      os: linux
-      language: generic
-      install: gem install awesome_bot
-      script:
-        - find . -type f -name '*.md' -exec awesome_bot {} \;
-      notifications:
-        email: false
-
-    - stage: 'Trigger Integration Tests'
-      language: minimal
-      os: linux
-      env:
-        - SDK=swift
-        - BUILD_NUMBER=${TRAVIS_JOB_NUMBER/.}
-        - TESTAPP_TAG=master
-        - SDK_BRANCH=$TRAVIS_PULL_REQUEST_BRANCH
-
-      cache: false
-      install:
-        - mkdir $HOME/travisci-tools && pushd $HOME/travisci-tools && git init && git pull https://$CI_USER_TOKEN@github.com/optimizely/travisci-tools.git && popd
-      script:
-        - $HOME/travisci-tools/trigger-script-with-status-update.sh
-
-    - stage: 'Lint'
-      language: swift
-      os: osx
-      osx_image: xcode12.4
-      install:
-        - gem install cocoapods -v '1.9.3'
-      script:
-        - pod spec lint --quick
-      after_script:
-        - curl -sSL https://download.sourceclear.com/ci.sh | bash
-
-    - stage: 'Source Clear'
-      if: type = cron
-      addons:
-        srcclr: true
-      before_install: skip
-      install: skip
-      before_script: skip
-      script: skip
-      after_success: skip
-
-    - &unittests
-      stage: 'Unit Tests'
-      language: swift
-      os: osx
-      osx_image: xcode12.4
-      branches:
-        only:
-          - master
-      env: COVERAGE_DIR=./COVERAGE SCHEME=OptimizelySwiftSDK-iOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=14.4 NAME='iPhone 11'
-      name: PLATFORM='iOS Simulator' OS=14.4 NAME='iPhone 11'
-      install:
-        #- gem install slather --no-document --quiet
-        - gem install coveralls-lcov
-        #
-        - gem install cocoapods -v '1.9.3'
-        - pod repo update
-        - pod install
-        # install jq without cleaning up
-        - HOMEBREW_NO_INSTALL_CLEANUP=true brew update && brew install jq
-        # preload simulator
-        - Scripts/start_simulator.sh
-      script:
-        - Scripts/run_unit_tests.sh
-      after_success:
-        - Scripts/upload_coveralls.sh
-        - sleep 5 # https://github.com/travis-ci/travis-ci/issues/4725
-      after_failure:
-        # install travis artifacts uploader
-        - sudo curl -sL https://raw.githubusercontent.com/travis-ci/artifacts/master/install | bash
-        - artifacts upload --target-paths "/${TRAVIS_REPO_SLUG}/${TRAVIS_BUILD_NUMBER}/${TRAVIS_JOB_NUMBER}/xcodebuild_logs" $(find /Users/travis/Library/Developer/Xcode/ -name *.xcresult -o -name *.log)
-        - artifacts upload --target-paths "/${TRAVIS_REPO_SLUG}/${TRAVIS_BUILD_NUMBER}/${TRAVIS_JOB_NUMBER}/buildoutput" "$TRAVIS_BUILD_DIR/buildoutput"
-    - <<: *unittests
-      env: COVERAGE_DIR=./COVERAGE SCHEME=OptimizelySwiftSDK-iOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=13.3 NAME='iPhone 8'
-      name: PLATFORM='iOS Simulator' OS=13.3 NAME='iPhone 8'
-    - <<: *unittests
-      env: COVERAGE_DIR=./COVERAGE SCHEME=OptimizelySwiftSDK-iOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=11.4 NAME='iPad Air'
-      name: PLATFORM='iOS Simulator' OS=11.4 NAME='iPad Air'
-    - <<: *unittests
-      env: COVERAGE_DIR=./COVERAGE SCHEME=OptimizelySwiftSDK-tvOS TEST_SDK=appletvsimulator PLATFORM='tvOS Simulator' OS=12.1 NAME='Apple TV 4K'
-      name: PLATFORM='tvOS Simulator' OS=12.1 NAME='Apple TV 4K'
-
-    - stage: 'Prepare for release'
-      name: Prepare for release
-      language: swift
-      os: osx
-      osx_image: xcode12.4
-      env:
-        - VERSION=3.10.1
-      install:
-        # install hub
-        - wget https://github.com/github/hub/releases/download/v2.11.2/hub-darwin-amd64-2.11.2.tgz -O /tmp/hub-darwin-amd64-2.11.2.tgz && tar -xvf /tmp/hub-darwin-amd64-2.11.2.tgz -C /usr/local/opt && ln -s /usr/local/opt/hub-darwin-amd64-2.11.2/bin/hub /usr/local/bin/hub
-        # upgrade cocoapods
-        - gem install cocoapods -v '1.9.3'
-      script:
-        - Scripts/run_prep.sh
-      after_failure:
-        - cat /tmp/build.out
-
-    - stage: 'Release'
-      name: Push to cocoapods.org
-      language: minimal
-      os: osx
-      osx_image: xcode12.4
-      env:
-        - VERSION=3.10.1
-      install:
-        # install hub
-        - wget https://github.com/github/hub/releases/download/v2.11.2/hub-darwin-amd64-2.11.2.tgz -O /tmp/hub-darwin-amd64-2.11.2.tgz && tar -xvf /tmp/hub-darwin-amd64-2.11.2.tgz -C /usr/local/opt && ln -s /usr/local/opt/hub-darwin-amd64-2.11.2/bin/hub /usr/local/bin/hub
-        # upgrade cocoapods
-        - gem install cocoapods -v '1.9.3'
-      script:
-        - Scripts/run_release.sh
diff --git a/README.md b/README.md
index 01b50fc8..bffeb3f5 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # SWIFT SDK
 [![Apache 2.0](https://img.shields.io/github/license/nebula-plugins/gradle-extra-configurations-plugin.svg)](http://www.apache.org/licenses/LICENSE-2.0)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/carthage/carthage)
-[![Build Status](https://travis-ci.com/optimizely/swift-sdk.svg?branch=master)](https://travis-ci.com/optimizely/swift-sdk)
+[![Build Status](https://github.com/optimizely/swift-sdk/actions/workflows/swift.yml/badge.svg?branch=yasir/gitAction)](https://github.com/optimizely/swift-sdk/actions)
 [![Coverage Status](https://coveralls.io/repos/github/optimizely/swift-sdk/badge.svg?branch=master)](https://coveralls.io/github/optimizely/swift-sdk?branch=master)
 [![Platforms](https://img.shields.io/cocoapods/p/OptimizelySwiftSDK.svg)](https://img.shields.io/cocoapods/p/OptimizelySwiftSDK.svg)
 [![Podspec](https://img.shields.io/cocoapods/v/OptimizelySwiftSDK.svg)](https://cocoapods.org/pods/OptimizelySwiftSDK)
diff --git a/Scripts/build_all.sh b/Scripts/build_all.sh
index d5e7b960..5b728397 100755
--- a/Scripts/build_all.sh
+++ b/Scripts/build_all.sh
@@ -35,4 +35,3 @@ main() {
 }
 
 main
-
diff --git a/Scripts/prepare_coveralls_report.sh b/Scripts/prepare_coveralls_report.sh
new file mode 100755
index 00000000..adfb0eba
--- /dev/null
+++ b/Scripts/prepare_coveralls_report.sh
@@ -0,0 +1,14 @@
+#!/bin/bash -e
+
+# prepare_coveralls_report.sh
+#
+# Usage:
+#  $ ./prepare_coveralls_report.sh
+#
+
+# [coveralls]
+# - exclude coverage for Test codes by setting OptimizelySwiftSDK-iOS scheme > Test > Options > Gather coverage for selected targets
+mkdir xccov2lcov && cd xccov2lcov && git init && git fetch --depth=1 https://github.com/trax-retail/xccov2lcov.git && git checkout FETCH_HEAD
+xcrun xccov view --report --json ../$COVERAGE_DIR/Logs/Test/*.xcresult  > coverage.json
+swift run xccov2lcov coverage.json > lcov.info
+cd ..
diff --git a/Scripts/prepare_simulator.sh b/Scripts/prepare_simulator.sh
new file mode 100755
index 00000000..3f2dba41
--- /dev/null
+++ b/Scripts/prepare_simulator.sh
@@ -0,0 +1,46 @@
+#!/bin/bash -e
+set -eou pipefail
+
+# expects the following environment variables defined
+# PLATFORM (eg. iOS Simulator)
+# OS (eg. 12.0)
+# NAME (eg. iPad Air)
+# OS_TYPE (eg. iOS)
+# SIMULATOR_XCODE_VERSION (Which Xcode's simulator to use)
+# Since github actions only provides limit simulators with each xcode, we need to link simulators from other versions of xcode to be used by current xcode.
+# We must use old simulators with current xcode since older xcode versions do not support swift 5 which is required by Swift SDK. 
+# More about XCode and its compatible simulators can be found here: https://github.com/actions/virtual-environments/blob/main/images/macos/macos-10.15-Readme.md
+# https://github.com/actions/virtual-environments/issues/551
+
+if [ "$SIMULATOR_XCODE_VERSION" != 12.4 ]; then
+    os_folder="iPhoneOS"
+    os="${OS/./-}"
+    name="${NAME// /-}"
+
+    sudo mkdir -p /Library/Developer/CoreSimulator/Profiles/Runtimes
+
+    # Check if device is Apple tv, update os_folder for linking purposes
+    if [[ "$NAME" = "Apple TV"* ]]
+    then
+        name="${name}-1080p"
+        os_folder="AppleTVOS"
+    fi
+
+    # update os_folder as per xcode version
+    if [ "$SIMULATOR_XCODE_VERSION" == 10.3 ]
+    then
+        os_folder="${os_folder}.platform/Developer/Library"
+    else
+        os_folder="${os_folder}.platform/Library/Developer"
+    fi
+
+    # Link and create simulators from older xcode versions which are not part of the current xcode version
+    sudo ln -s /Applications/Xcode_$SIMULATOR_XCODE_VERSION.app/Contents/Developer/Platforms/$os_folder/CoreSimulator/Profiles/Runtimes/$OS_TYPE.simruntime /Library/Developer/CoreSimulator/Profiles/Runtimes/$OS_TYPE\ $OS.simruntime
+    xcrun simctl create "custom-device" "com.apple.CoreSimulator.SimDeviceType.$name" "com.apple.CoreSimulator.SimRuntime.$OS_TYPE-$os"
+    CUSTOM_SIMULATOR="$(instruments -s devices | grep -m 1 'custom-device' | awk -F'[][]' '{print $2}')"
+else
+    echo ".devices.\"com.apple.CoreSimulator.SimRuntime.${PLATFORM/ Simulator/}-${OS/./-}\"" > /tmp/jq_file
+    CUSTOM_SIMULATOR=$( xcrun simctl list --json devices | jq -f /tmp/jq_file | jq -r '.[] | select(.name==env.NAME) | .udid' )
+fi
+xcrun simctl boot $CUSTOM_SIMULATOR && sleep 30
+xcrun simctl list | grep Booted
diff --git a/Scripts/run_prep.sh b/Scripts/run_prep.sh
index 7209e9ca..f387d54a 100755
--- a/Scripts/run_prep.sh
+++ b/Scripts/run_prep.sh
@@ -1,19 +1,16 @@
-#!/usr/bin/env bash
-set -e
+#!/bin/bash -e
 
-# Because `hub` is used, this script expects the following environment variables defined in travis job settings:
+# Because `hub` is used, this script expects the following environment variables:
 # GITHUB_TOKEN - github api token with repo permissions (display value in build log setting: OFF)
 # GITHUB_USER - github username that GITHUB_TOKEN is associated with (display value in build log setting: ON)
 
 # Additionally, it needs the following environment variables:
-# VERSION - defined in .travis.yml
-
-# Variables starting with TRAVIS_ are default environment variables available to all Travis CI builds
+# VERSION - defined in swift.yml
 
 COLOR_RESET='\033[0m'
 COLOR_MAGENTA='\033[0;35m'
 COLOR_CYAN='\033[0;36m'
-MYREPO=${HOME}/workdir/${TRAVIS_REPO_SLUG}
+MYREPO=${HOME}/workdir/${REPO_SLUG}
 AUTOBRANCH=${GITHUB_USER}/prepareRelease${VERSION}
 BUILD_OUTPUT=/tmp/build.out
 touch $BUILD_OUTPUT
@@ -21,7 +18,7 @@ touch $BUILD_OUTPUT
 function prep_workspace {
   rm -rf ${MYREPO}
   mkdir -p ${MYREPO}
-  git clone -b ${TRAVIS_BRANCH} https://${GITHUB_TOKEN}@github.com/${TRAVIS_REPO_SLUG} ${MYREPO}
+  git clone -b ${BRANCH} https://${GITHUB_TOKEN}@github.com/${REPO_SLUG} ${MYREPO}
   cd ${MYREPO}
   git checkout -b ${AUTOBRANCH}
 }
@@ -38,7 +35,6 @@ function error_handler() {
 }
 
 function do_stuff {
-  # keepalive for Travis
   while :; do sleep 10; echo -n .; done &
   trap "kill $!" EXIT
   trap 'error_handler' ERR
@@ -64,7 +60,7 @@ function push_changes {
   git config user.name "${GITHUB_USER}"
   git add --all
   # this is like a try/catch
-  git commit -m "ci(travis): auto release prep for $VERSION" ||
+  git commit -m "ci(git-action): auto release prep for $VERSION" ||
     {
       case $? in
         1 )
@@ -77,10 +73,10 @@ function push_changes {
           ;;
       esac
     }
-  git push https://${GITHUB_TOKEN}@github.com/${TRAVIS_REPO_SLUG} ${AUTOBRANCH}
-  PR_URL=$(hub pull-request --no-edit -b ${TRAVIS_BRANCH})
+  git push https://${GITHUB_TOKEN}@github.com/${REPO_SLUG} ${AUTOBRANCH}
+  PR_URL=$(hub pull-request --no-edit -b ${BRANCH})
   echo -e "${COLOR_CYAN}ATTENTION:${COLOR_RESET} review and merge ${COLOR_CYAN}${PR_URL}${COLOR_RESET}"
-  echo "then to release to cocoapods use Travis CI's Trigger build with the following payload:"
+  echo "then to release to cocoapods use Git action's Trigger build with the following payload:"
   echo -e "${COLOR_MAGENTA}env:${COLOR_RESET}"
   echo -e "${COLOR_MAGENTA}  - RELEASE=true${COLOR_RESET}"
 }
diff --git a/Scripts/run_release.sh b/Scripts/run_release.sh
index c10724b6..a62bc9b6 100755
--- a/Scripts/run_release.sh
+++ b/Scripts/run_release.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -e
 
-# Because `hub` is used, this script expects the following environment variables defined in travis job settings:
+# Because `hub` is used, this script expects the following environment variables:
 # GITHUB_TOKEN - github api token with repo permissions (display value in build log setting: OFF)
 # GITHUB_USER - github username that GITHUB_TOKEN is associated with (display value in build log setting: ON)
 
@@ -22,7 +22,7 @@ function release_github {
 
   DESCRIPTION=$(awk "/^${NEW_VERSION}$/,/^${LAST_VERSION:-nothingmatched}$/" ${CHANGELOG} | grep -v "^${LAST_VERSION:-nothingmatched}$")
 
-  hub release create v${VERSION} -m "Release ${VERSION}" -m "${DESCRIPTION}" -t "${TRAVIS_BRANCH}"
+  hub release create v${VERSION} -m "Release ${VERSION}" -m "${DESCRIPTION}" -t "${BRANCH}"
 
 }
 
diff --git a/Scripts/run_unit_tests.sh b/Scripts/run_unit_tests.sh
index bea41425..4541b654 100755
--- a/Scripts/run_unit_tests.sh
+++ b/Scripts/run_unit_tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -e
 
 # run xcode unit tests
 #
@@ -7,7 +7,7 @@
 #
 
 # unit tests for PR only
-if [[ "$TRAVIS_BRANCH" == "master" ]]
+if [[ "$BRANCH" == "master" ]]
 then
   xcodebuild test -derivedDataPath $COVERAGE_DIR  -workspace OptimizelySwiftSDK.xcworkspace -scheme $SCHEME -configuration Release CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO -sdk $TEST_SDK -destination "platform=$PLATFORM,OS=$OS,name=$NAME" ONLY_ACTIVE_ARCH=YES | tee buildoutput | xcpretty && test ${PIPESTATUS[0]} -eq 0
 fi
diff --git a/Scripts/start_simulator.sh b/Scripts/start_simulator.sh
deleted file mode 100755
index 7cbc9bc0..00000000
--- a/Scripts/start_simulator.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-set -eou pipefail
-
-# expects the following environment variables defined
-# PLATFORM (eg. iOS Simulator)
-# OS (eg. 12.0)
-# NAME (eg. iPad Air)
-
-# prep jq arg because it doesnt allow parameter expansion within its single quotes
-echo ".devices.\"com.apple.CoreSimulator.SimRuntime.${PLATFORM/ Simulator/}-${OS/./-}\"" > /tmp/jq_file
-
-simulator=$( xcrun simctl list --json devices | jq -f /tmp/jq_file | jq -r '.[] | select(.name==env.NAME) | .udid' )
-if [ -z $simulator ]; then
-    echo "The requested simulator ($PLATFORM $OS $NAME) cannot be found."
-    #xcrun instruments -s device
-    xcrun xctrace list devices
-    sleep 3
-    exit 1
-fi
-
-xcrun simctl boot $simulator && sleep 30
-xcrun simctl list | grep Booted
diff --git a/Scripts/test_all.sh b/Scripts/test_all.sh
index 36e12d96..75f7f589 100755
--- a/Scripts/test_all.sh
+++ b/Scripts/test_all.sh
@@ -1,13 +1,22 @@
-echo 'Testing OptimizelySwiftSDK-iOS (iPhone 8,OS=12.1)'
-xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme OptimizelySwiftSDK-iOS -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 8,OS=12.1' test
-echo 'Testing OptimizelySwiftSDK-iOS (iPhone SE,OS=11.1)'
-xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme OptimizelySwiftSDK-iOS -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone SE,OS=11.1' test
-echo 'Testing OptimizelySwiftSDK-iOS (iPhone XS,OS=13.2)'
-xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme OptimizelySwiftSDK-iOS -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone XS,OS=13.2' test
+#!/bin/bash -e
+# Since github actions only provides limit simulators with each xcode, we need to link simulators from other versions of xcode to be used by current xcode.
+# We must use old simulators with current xcode since older xcode versions do not support swift 5 which is required by Swift SDK. 
+# More about XCode and its compatible simulators can be found here: https://github.com/actions/virtual-environments/blob/main/images/macos/macos-10.15-Readme.md
+# https://github.com/actions/virtual-environments/issues/551
 
-echo 'Testing OptimizelySwiftSDK-tvOS (Apple TV,OS=11.1)'
-xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme OptimizelySwiftSDK-tvOS -sdk appletvsimulator -destination 'platform=tvOS Simulator,name=Apple TV,OS=11.1' test
-echo 'Testing OptimizelySwiftSDK-tvOS (Apple TV,OS=12.1)'
-xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme OptimizelySwiftSDK-tvOS -sdk appletvsimulator -destination 'platform=tvOS Simulator,name=Apple TV,OS=12.1' test
-echo 'Testing OptimizelySwiftSDK-tvOS (Apple TV 4K,OS=13.2)'
-xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme OptimizelySwiftSDK-tvOS -sdk appletvsimulator -destination 'platform=tvOS Simulator,name=Apple TV 4K,OS=13.2' test
+deviceModels=("iPhone SE" "iPhone 8" "iPhone 11" "Apple TV" "Apple TV" "Apple TV 4K")
+osVersions=("12.4" "13.3" "14.4" "12.4" "13.3" "14.3")
+xcodeVersions=("10.3" "11.3.1" "12.4" "10.3" "11.3.1" "12.4")
+platforms=("iOS" "iOS" "iOS" "tvOS" "tvOS" "tvOS")
+testSdks=("iphonesimulator" "iphonesimulator" "iphonesimulator" "appletvsimulator" "appletvsimulator" "appletvsimulator")
+
+for i in "${!deviceModels[@]}"; do
+  export PLATFORM="${platforms[$i]} Simulator"
+  export OS="${osVersions[$i]}"
+  export NAME="${deviceModels[$i]}"
+  export OS_TYPE="${platforms[$i]}"
+  export SIMULATOR_XCODE_VERSION="${xcodeVersions[$i]}"
+  Scripts/prepare_simulator.sh
+  echo "Testing OptimizelySwiftSDK-${platforms[$i]} (${deviceModels[$i]},OS=${osVersions[$i]})"
+  xcrun xcodebuild -workspace OptimizelySwiftSDK.xcworkspace -scheme "OptimizelySwiftSDK-${platforms[$i]}" -sdk "${testSdks[$i]}" -destination "platform=${platforms[$i]} Simulator,name=${deviceModels[$i]},OS=${osVersions[$i]}" test
+done
diff --git a/Scripts/upload_coveralls.sh b/Scripts/upload_coveralls.sh
deleted file mode 100755
index c74239c1..00000000
--- a/Scripts/upload_coveralls.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/bin/bash
-
-# upload_coveralls.sh
-#
-# Usage:
-#  $ ./upload_coveralls.sh
-#
-
-# [coveralls]
-# - exclude coverage for Test codes by setting OptimizelySwiftSDK-iOS scheme > Test > Options > Gather coverage for selected targets
-# - report coverage for PR and iPhone 11 only (avoid redundant ones)
-# - use Xcode12.4+ (older Xcode reports a wrong number)
-if [[ "$TRAVIS_BRANCH" == "master" && "$PLATFORM" == "iOS Simulator" && "$NAME" == "iPhone 11" ]]
-then
-  mkdir xccov2lcov && cd xccov2lcov && git init && git fetch --depth=1 https://github.com/trax-retail/xccov2lcov.git && git checkout FETCH_HEAD
-  xcrun xccov view --report --json ../$COVERAGE_DIR/Logs/Test/*.xcresult  > coverage.json
-  swift run xccov2lcov coverage.json > lcov.info
-
-  cd ..
-  coveralls-lcov -v --repo-token $COVERALLS_TOKEN   xccov2lcov/lcov.info
-fi