This document discusses integrating GitLab, Terraform, and AWS for infrastructure as code and continuous delivery. It summarizes a demo project that implements a serverless "Hello World" application using AWS Lambda, API Gateway, and IAM roles, with GitLab CI/CD pipelines for linting, testing, packaging, planning, deploying, and destroying cloud resources defined with Terraform. The document argues that these tools provide complete DevOps capabilities when combined, with GitLab providing a full CI/CD toolchain and single interface, Terraform allowing infrastructure to be coded and managed as code across clouds, and AWS providing scalable computing infrastructure and services.