I have a single domain, a DC server and an Exchange 2010 server for about 18 users. I am thinking of implementing a hybrid environment of Exchange 2010 on premise and Office 365. The idea behind using Office 365 is as a failover should my on premise fail for some reasons. I also wanted to utilize other features within Office 365 such as OneDrive, Skype for Business, and such.
I would like some help on how to get started, and what I need to look out for to be successful. Thanks.