I'm not certain if it's still the case, but Vesper Sync was originally written using Azure Mobile Services. https://channel9.msdn.com/Blogs/Windows-Azure/Learn

I'm not certain if it's still the case, but Vesper Sync was originally written using Azure Mobile Services. https://channel9.msdn.com/Blogs/Windows-Azure/Learn-how-Vesper-built-offline-sync-using-Azure-Mobile-Services- https://channel9.msdn.com/Blogs/Windows-Azure/Learn-how-Vesp... During many Azure ad spots on The Talk Show, it had also been mentioned that Vesper used it.