A Guide to Preview Deployments with Serverless CI/CD

Preview deployments allow you to automatically create isolated backend environments for each pull request, similar to frontend preview deployments. With serverless architectures and pay-as-you-go AWS services, you can spin up complete infrastructure stacks for feature branches at minimal cost. This enables automated testing, clean code review environments, and integration testing without affecting staging or production. The guide walks through setting up preview deployments using Serverless Framework Pro with GitHub, including configuring AWS providers, connecting repositories, and testing the deployment workflow with a sample voting application.