TRASA compliments systems like Keycloak with additional security features, and you should use both; Keycloak to manage user and service identities and TRASA to ensure that those identities are not misused, compromised credentials do not lead to data breach and achieve compliance.

Think of Keycloak as human resource admin, which enrolls an employee and applications in an organization, and assign them a badge for security clearance to access those applications. TRASA is a system that polices misuse of their security clearance (malicious insider) and protects applications and services from compromised accounts threats (stolen credentials).