Infrastructure

Everything that changed under the hood in MAS 9 — the architecture shift from WebSphere to OpenShift, Java 17 migration impact, sealed databases, containerized deployment, and what your infrastructure team needs to learn. The technical foundation every upgrade team must understand.

Posam LakshminarayanaMar 17, 2026Part 1 of 25

A comprehensive guide to designing multi-environment MAS deployments on OpenShift. Covers four topology patterns (single-cluster to hub-spoke GitOps), namespace isolation, resource sizing per tier, promotion workflows, RBAC, network policies, and testing gates across dev, test, UAT, and production.

Posam LakshminarayanaFeb 6, 2026Part 9 of 9