Hi @ice-quake,
the nodes look for the word "integration" in the notes attribute of the URLs/IPs sections. This is far from optimal, but today there is no way to identify programmatically if a URLs/IPs in that list belongs to MSFT or not. The "required" field has a different meaning, not only includes 3rd party accessory sites but also optional MSFT sites.
If you are ok with dropping *all* the optional sites, you can change the prototype of the Miner to drop all the indicators with o365_required attribute set to false. The O365 API Miners already expose that attribute in the indicators.
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