Q: Hybrid environment single sign on with MS Indentity Manager 2016

Hi. I have some technical Qs about single sign on in a hybrid environment, using MIM 2016. I am not too familiar with the product.

1. Can the MIM be used to achieve single sign on in a hybrid environment instead of using ADFS? There is currently an on prem AD in use. SSO to both O365 and naturally on the premise applications.
2. If yes to #1, are there any significant upsides to using MIM instead of ADFS?
3. Is MIM still a viable solution if the on premises AD has multiple forests?

Basically what I'm thinking is that should/could MIM be used for single sign on instead of ADFS.

Thanks in advance!