Probably a stupid question, but I would like to confirm - if the organization has hybrid connection and utilizes the intra-organization connector (IOC) for the free/busy information - is this organization impacted by the information in this article?
I would assume its not affected, because as described in this article in case IOC is used then the on-prem Exchange goes to Azure ACS OAuth Endpoint to get the delegation token. In that case I would not need to setup the scheduled task suggested here.
In case organization relationships are being used and IOC is not used then on-prem Exchange goes to MFG and then the organization would be impacted by the information of this article.
Please confirm if this assumption is correct. Thank you.