We would like to setup a test environment for our SharePoint online tenant with identical identities and directory sync with ADFS to simulate and troubleshoot the problems the issues.
Please share your thoughts and any guidance.
SharePoint Stack Exchange is a question and answer site for SharePoint enthusiasts. It only takes a minute to sign up.Sign up to join this community
It may not be appropriate for production. But for my needs I made AD integration with Office365 using a sub-domain for dev/test purposes. You can find a lot of information about this problem in Chris O'Brien article series. I didn't find better knowledge source for this problem.
It is depends on the size of your tenant. We always create a new site collection for testing which contains the same tenant settings. The features we develop tested in test site collection and move to live site collection.
There are some cases you will have multiple live site collections. In this case, the test site collection going to be used and subsites will act as a replication to live site collection.