I would like to get some sort of information[blogs, links, checklist,lessons learned] in upgrade a forest with multiple domains from Windows 2003 to Windows 2012 R2.
Besides the links that you will attach, can someone please summarize high level steps to complete a full upgrade from Windows 2003 to 2012 R2?
Can someone also summarize all dependencies such as applications, IP helpers, and so on?
Anybody willing to share lessons learned from previous experience? if so, can you please provide details