A webinar session focused on API security practices, specifically within the context of OutSystems development. The session, led by speakers Sandeep and Sabu, covers various aspects of API integration, including how to consume and expose APIs, the importance of securing APIs through encryption, authentication methods, and error handling. The session also touches on performance optimization, rate limiting, and the use of HTTP status codes. There is an interactive segment with a quiz and a discussion on potential topics for future sessions, such as best practices, architecture, and hands-on demos.