Integrating with Microsoft Exchange ActiveSync and Exchange Web Services can be fraught with challenges, including complex documentation, discrepancies in documentation details, and the need to navigate various technical inconsistencies and edge cases. Developers face issues such as changes in WBXML syntax that can disrupt service connections, inconsistencies in routing types, and unpredictable server throttling that complicates request handling. Nylas has extensive experience in dealing with these issues and offers a suite of universal communications APIs that streamline the process, significantly reducing the integration time from over 17,000 hours to just 18 days. Their solutions help developers avoid common pitfalls associated with Exchange by providing reliable data synchronization and CRUD operations across email, calendar, and contacts services, alongside offering support for unexpected data formats that can lead to errors, such as those involving datetime values from the Exchange server.