The article describes setting up a pipeline to deploy an API to two environments, QA and Production, using AWS CodeBuild, GitHub, and PlanetScale. The pipeline automates the process of testing and merging changes between two instances of a database by creating isolated branches in PlanetScale for each environment. The pipeline uses AWS CodeBuild to build and deploy the container image to ECR and Lightsail, and also updates the schema in PlanetScale using the PlanetScale CLI. The pipeline is configured to trigger on GitHub commits to the QA branch and on pull requests to the main branch. The article provides step-by-step instructions for setting up the pipeline and configuring the necessary AWS services.