The guide provides a comprehensive walkthrough on creating Neon branches for preview environments on Qovery, a cloud infrastructure automation platform. It explores the challenges of managing databases within preview environments, particularly the issues arising from using shared databases or provisioned copies, and introduces Neon as a solution that allows isolated data copies on demand, enhancing data management efficiency. Neon is a serverless Postgres that automatically scales resources based on workload, separating storage and compute, and its branching capability allows data to be treated like code, facilitating development and testing without data replication. The guide details the process of integrating Neon with Qovery, including setting up lifecycle jobs that automate the creation and deletion of Neon branches using scripts, and provides instructions on configuring the necessary environment variables and Dockerfiles. The guide underscores the advantages of using Neon for database management in preview deployments, emphasizing its cost-effectiveness and ease of use, while also encouraging feedback on other deployment providers or CI/CD tools for future coverage.