Let me clarify this with an example from my recent experience. In my previous role, I worked on a large-scale banking project where we had to migrate several legacy SOAP APIs to RESTful services. The challenge was that these SOAP APIs were tightly integrated with over 30 different Windows-based applications, so a full migration at once would have caused significant disruption.To manage this, we started by identifying the most critical and frequently used SOAP actions. We analyzed the dependencies for each action and engaged with stakeholders to understand the business impact of migrating each endpoint. For compatibility, we created wrapper services that allowed the existing Windows applications to continue communicating with the new REST APIs without immediate code changes on their end. This approach helped us phase the migration and reduce risk.For performance, we optimized the REST endpoints by leveraging asynchronous processing and caching where appropriate. We also conducted thorough load testing to ensure the new APIs could handle the expected traffic. Throughout the process, we maintained detailed documentation and worked closely with the QA team to validate both functional and non-functional requirements.That brings me to the final step, where after each migration phase, we provided demos to business users and collected feedback to ensure the transition was smooth and the new APIs met their needs. This incremental and collaborative approach helped us manage both compatibility and performance challenges effectively during the migration from SOAP to REST.