A retrospective on how Enterprise Java evolved from the heavy EJB era to modern cloud-native frameworks like Spring Boot and Quarkus.

Will we have the discipline to do it right? An exploration of how legacy mainframe principles like centralized transactions, modular design, and RACF-style authorization reveal that many "cloud-native" patterns are reinventions of tried-and-true mainframe practices.

A deep dive into building centralized, auditable, resource-based access control systems using Keycloak, inspired by mainframe RACF principles.