Hoppe Marine is a Hamburg-based company, supplier of fluid control and measurement systems for the maritime industry. Hoppe’s solutions include a ship-to-shore pipeline to provide data via multiple APIs written with FastAPI and deployed as AWS Lambda functions. In this talk, I invite you to embark on our journey through the challenging waters of migrating those APIs from a multi-repo approach to a unified monorepo. I present the motivation, difficulties and dive into our solution using open-source Python tools like Pants.