Migrated a legacy on-premise platform to a multi-region cloud architecture with no scheduled downtime window.
Enterprise IT engagement, 5 months in scope.
The client's legacy platform had a 6-year-old monolith with no staging parity, and the business could not accept a maintenance window.
Introduced a strangler-fig migration pattern: new services deployed behind a traffic-shifting gateway, validated against shadow traffic before any customer request touched them.