Yes, it is possible to track Visitor ID by creating Marketing Cloud ID Service via DTM/Analytics. There is a detailed deployment & implementation required and someone from Analytics can provide you more info regarding the same. This ID can further be utilized across different Adobe solutions.
I will try to provide you some doc, if I manage to get one.
Yes they are integrated. One of the best features and reasons to integrate I've seen is accounting for page metrics (such as time on site, page views, etc) in your optimization process. You can also report out of Adobe Analytics (AA) or from Adobe Media Optimizer (AMO).
If you have specific features you are curious about, let me know!
Thank you all for your replies, that’s really helpful.
I would also like to know if it is possible to utilize Visitor ID and Marketing Channel data and use it as a base to create campaigns around it? I would really appreciate if there is some documentation or whitepaper around it.