Sourabh Jain focused on deprecating and cleaning up legacy features in the Azure/cosmos-explorer repository, specifically removing the outdated Mongo RU Schema Analyzer from both the user interface and underlying codebase. He updated React components and TypeScript logic to eliminate unused imports and dead code paths, ensuring the UI accurately reflected the product’s current capabilities. By streamlining the front end and reducing maintenance overhead, his work aligned the project with its roadmap and improved future development efficiency. While the scope was limited to a single feature over one month, the changes demonstrated careful attention to code quality and maintainability in JavaScript and React.