Microservice architectures are the new normal. Building small, self-contained, ready-to-run applications can bring great flexibility and added resilience to your code. Spring Boot's many purpose-built features make it easy to build and run your microservices in production at scale.
Microservice architecture is complete without Spring Cloud ‒ easing administration and boosting your fault tolerance.
Security plays an extremely important role in any application. Its importance only increases in a microservices architecture where the attack surface becomes larger.