Sandeep Sahani enhanced the iOS architecture documentation for the kamranahmedse/developer-roadmap repository, focusing on clarifying architectural patterns and best practices for iOS application development. He used Markdown to deliver detailed, structured documentation that aligns closely with actual architecture implementations, reducing ambiguity and the risk of misinterpretation for new and existing contributors. By emphasizing documentation discipline and software architecture principles, Sandeep improved the consistency and maintainability of the onboarding process. His work demonstrated a collaborative approach, leveraging version control to ensure traceability and alignment across teams. The update addressed a key need for clear, actionable guidance in iOS development workflows.