This course teaches developers how to design, build, secure, and manage APIs using Google Cloud's Apigee API Platform. Participants explore the full API lifecycle, from API design and documentation through to deployment, security, and analytics.Learners begin by examining API design principles and how OpenAPI specifications can be used to document and standardise API definitions. The course then introduces the Apigee platform and demonstrates how APIs are implemented using API proxies and packaged as API products that can be consumed by application developers.Through a combination of lectures, demonstrations, and practical labs, participants learn how to develop APIs, apply security policies, manage traffic, and publish APIs to developer portals. The course also explores monitoring and analytics capabilities that help organisations manage and optimise API usage across their platforms.