Worked on the Particular/NServiceBus.AmazonSQS repository to migrate the messaging system from a hybrid Pub/Sub model to a native Pub/Sub approach. This involved introducing clear deprecation messaging within the C# codebase, updating approvals files, and providing detailed guidance for future unit testing and customer migrations. The changes focused on software architecture and backend development, aiming to reduce long-term support complexity and minimize migration risks for users. By documenting the deprecation path and collaborating on commit updates, the work ensured that customers have a smoother transition to native Pub/Sub, with improved clarity and maintainability for ongoing development and support.