Selected Case Studies

CONTEXTA distributed hospital environment with analyzers, direct interfaces, serial connectivity, vendor middleware, LIS/HIS workflows, and multiple ownership boundaries.

ARCHITECTURE DECISIONSeparate transport from clinical semantics; govern device inventory, code maps, interface direction, validation evidence, cutover, and support ownership.

VALIDATIONScenario-based testing, traceable evidence, exception review, cutover rehearsal, and operational handover.

CONTEXTBusiness-critical enterprise flows requiring secure access, predictable delivery, controlled change, and production observability.

ARCHITECTURE DECISIONUse governed APIs for synchronous access, reliable messaging for decoupled workloads, explicit identity propagation, and operational controls.

VALIDATIONScenario-based testing, traceable evidence, exception review, cutover rehearsal, and operational handover.

CONTEXTInstrument protocols and operational workflows did not align cleanly with enterprise clinical messaging and mapping ownership.

ARCHITECTURE DECISIONTreat ASTM-to-HL7 conversion as semantic integration; validate orders, results, flags, status, acknowledgements, exceptions, and recovery.

VALIDATIONScenario-based testing, traceable evidence, exception review, cutover rehearsal, and operational handover.

CONTEXTLegacy dependencies, unclear contracts, and uneven environments created risk close to production cutover.

ARCHITECTURE DECISIONBaseline the current state, define target boundaries, version contracts and mappings, test failure paths, and make rollback executable.

VALIDATIONScenario-based testing, traceable evidence, exception review, cutover rehearsal, and operational handover.

CONTEXTDelivery and infrastructure work depended on repeatable configuration, diagnostics, security, and operational handover.

ARCHITECTURE DECISIONAutomate the stable path, preserve observability and human recovery, and make platform ownership explicit.

VALIDATIONScenario-based testing, traceable evidence, exception review, cutover rehearsal, and operational handover.