This video demo how to secure Spring Boot API by enabling Outbound TLS on API in Anypoint Manager added to Anypoint Flex Gateway deployed in Connected Mode. This video demo in following in detail:
Create Secret Group in Secret Manager
Add Trust store to Secret Group
Add TLS Context to Secret Group
Add Spring Boot API to Anypoint Flex Gateway in Anypoint Manager
In Anypoint Manager add Outbound TLS to Spring Boot API added to the Anypoint Flex Gateway deployed in Connected Mode