04 / ENGINEERING ATLAS
Knowledge for the next step.
Explore the migration path. Check the support date. Give your decision a shared vocabulary.
01 / MIGRATION PATHS
From where, to where?
Each guide starts with the constraints. Then comes the sequence, the acceptance checks and the rollback decision.
.NET Framework to .NET 10 Migration Guide
A .NET Framework to .NET 10 checklist for application models, NuGet packages, Windows dependencies, data verification and rollback.
Java 8 to Java 21 Migration Checklist
Check JDK distribution, libraries, reflection and encoding when migrating Java 8 to Java 21. Plan representative load tests and rollback.
PHP 7 to PHP 8 Migration: Steps and Checklist
A PHP 7 upgrade checklist covering a supported PHP 8 target, package compatibility, behavior, data checks, deployment and rollback.
02 / REFERENCE DESK
Dates change. Follow the source.
The calendar is a starting point for your inventory. Distribution, licensing and support scope are stated alongside each record.
Open the end-of-support calendar →Only records with a verified day are listed here. An unknown date does not mean indefinite support.
Start with a shared meaning.
EOL, technical debt, p95, strangler fig… Definitions and their context, together.