Strangler fig patterns, adapter layers, and modernisation strategies for integrating with core banking and legacy financial systems — without taking the bank offline.
Modernising integration with core banking: strangler fig, anti-corruption layer, MQ-CICS bridges, COBOL adapters, COMMAREA marshalling, EBCDIC handling, and cutover patterns.
Sequencing a multi-year migration: dependency analysis, capability slicing, parallel run patterns, and the metrics that prove progress.
IBM IIDR and Debezium against z/OS and IBM i, schema mapping, and the patterns for keeping legacy as system-of-record while shipping new product.