https://www.undocumented-features.com/2018/05/04/connecting-splunk-to-office-365-part-1-add-on-for-microsoft-cloud-services/https://www.undocumented-features.com/2018/05/06/connecting-splunk-to-office-365-part-2-microsoft-office-365-reporting-add-on-for-splunk/