The undocumented sync engine
This site is dedicated to the sync engine found in FIM2010 (Forefront Identity Manager), MIM2016 (Microsoft Identity Manager), and Azure AD Connect sync. Its purpose is not to document what is already available on docs.microsoft.com, but to document aspects not found on Microsoft's public sites.
Most information would be considered 400-level and it is assumed you have some basic understanding of the product.
Right now ECMA2 is covered, but other aspects of the sync engine are expected to appear here as well.