Yama 2 is a microservices architecture application programming interface (API) built using JAX-RS, Spring Boot, OAuth2, and other technologies. It originated from an earlier project called Cimande and is divided into modules including a core, social integration, web API and web application. Developers can access the codebase on GitHub and generate projects using Maven archetypes. The document provides information on database configuration, compilation, and deployment of the Yama 2 API.