Each product is supposed to work with +/- 1 major version of the other. Two caveats:
- there will be bugs, so if there’s a bug in 11.0.8 and it’s not fixed until 11.1.x, you would need to upgrade
- When new functionality is added that requires both client and server to function, we don’t make any commitments about backporting. For example, the new policyfile features aren’t going to be backported to Chef Server 11.