In my previous role, I worked on a project where we needed to migrate a legacy monolithic application to a microservices architecture. The biggest challenge was ensuring minimal downtime while maintaining data consistency. My task was to design and implement a scalable solution for breaking down the monolith into independent services. To tackle this, I first analyzed the system dependencies and identified services that could be decoupled with minimal impact. I then introduced an API gateway to handle communication between the services and gradually moved functionalities one by one, starting with the least critical ones. To minimize downtime, we implemented a blue-green deployment strategy and used database versioning to support both old and new schemas simultaneously. Throughout the process, I collaborated with cross-functional teams to ensure smooth integration and testing. As a result, we successfully completed the migration with zero downtime, improved system scalability, and reduced deployment time by 40%. The transition also made future development more efficient, as teams could now work independently on different services. This experience taught me the importance of careful planning, collaboration, and phased execution when handling complex technical challenges.