Microsoft Intune: Certificates for Microsoft Intune
From the archive (2015). Written for the tools of the time, so some details may be out of date.
Excellent post by fellow MVP Jason Sandys. When certs are needed or not needed can be quite confusing and Jason has done a nice job of explaining the topic.
Certificates needed for using Intune and managing devices can be a very confusing topic whether in a hybrid or standalone configuration. If you are unfamiliar with the difference between hybrid and standalone, check out my previous post on this: Comparing the Two Modes of Microsoft Intune.