Skipper, an embedded workflow engine developed by Airbnb, is now open source. It allows developers to implement durable workflows within their applications without needing a separate orchestration service. The article details Skipper's architecture, use cases, and the advantages it brings over traditional workflow engines. It is particularly suited for Java and Kotlin services that manage multi-step processes, offering features like recovery from failures and persistent state management. The project has been positively received within Airbnb, and future developments will include more storage plugins and enhanced tooling.