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Building a Serverless CI/CD Pipeline on AWS: A Step-by-Step Guide

Published on

January 16, 2024

Read time

4 minute read

Continuous Integration and Continuous Deployment (CI/CD) are essential practices in modern software development, enabling faster and more reliable delivery of applications. In this article, we’ll explore the implementation of a serverless CI/CD pipeline using AWS services such as CodePipeline, CodeBuild, and Lambda.

Building a serverless CI/CD AWS pipeline

In the dynamic world of software development, efficient CI/CD processes are crucial. Serverless architecture, with its scalability and cost-effectiveness, has become increasingly popular. Combining serverless principles with AWS services creates a powerful environment for building and deploying applications.

AWS Services Overview

AWS CodePipeline

AWS CodePipeline orchestrates your CI/CD workflow, automating the build, test, and deployment phases. It offers a visual representation of your pipeline with configurable stages.

AWS CodePipeline

AWS CodeBuild

AWS CodeBuild is a fully managed build service that compiles source code, runs tests, and produces ready-to-deploy artifacts. It integrates seamlessly with CodePipeline, allowing you to create custom build environments using Docker containers.

AWS CodeBuild

AWS Lambda

AWS Lambda lets you run code without provisioning or managing servers. In the context of CI/CD, Lambda functions can be used for serverless deployment, adding flexibility and speed to your release process.

  • Web Applications
AWS Lambda for Web Applications
  • Mobile Applications
AWS Lambda for Mobile Applications

Architecture Design

High-Level Architecture

The serverless CI/CD pipeline on AWS involves the integration of CodePipeline, CodeBuild, and Lambda. The diagram below illustrates how these services work together to automate the entire process.

AWS serverless CI and CD pipeline

Pipeline Configuration

Let’s dive into the configuration of a typical pipeline. The pipeline consists of stages for source, build, and deployment.

Pipeline Configuration

Build Environment Setup

Configuring CodeBuild involves specifying build environments, buildspec files, and any custom settings needed for your specific project.

AWS CodeBuild

Serverless Deployment with AWS Lambda

Lambda functions are integrated into the deployment stage, ensuring that your application is deployed in a serverless manner.

Serverless Deployment with AWS Lambda

Implementation Steps

Setting Up CodePipeline

  1. Create a new CodePipeline project.
  2. Configure the source (e.g., AWS CodeCommit, GitHub) and destination (e.g., AWS Lambda).

Configuring CodeBuild

  1. Set up a build project in AWS CodeBuild.
  2. Configure build environments and artifacts as per your project requirements.

Integrating AWS Lambda

  1. Create Lambda functions for deployment.
  2. Configure CodePipeline to deploy Lambda functions.

Best Practices and Optimization

Security Considerations

Implement secure coding practices and employ role-based access control for CodePipeline and CodeBuild.

Optimizing Build Performance

Explore caching strategies in CodeBuild and parallelize build tasks for faster builds.

Monitoring and Logging

Set up CloudWatch Logs for CodePipeline and CodeBuild. Monitor pipeline execution and build logs for insights into your CI/CD workflow.


In this guide, we’ve explored the implementation of a serverless CI/CD pipeline using AWS CodePipeline, CodeBuild, and Lambda. By leveraging these serverless services, you can achieve faster, more efficient application delivery.

Next Steps

Consider further enhancements or features for your CI/CD pipeline. AWS offers a plethora of services that can be integrated to meet specific project requirements. Dive deeper into AWS documentation and explore additional services.

Harrish Murugesan


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