In today’s cloud-first approach to managing corporate infrastructure and running applications, more than 56% of global organizations use Microsoft for email. Whether using Microsoft 365 (M365) or Office 365 (O365), this shift to the cloud has supported an agile and fluid way of doing business for more than 250,000,000 monthly users. The move to the cloud has also allowed companies to streamline their email security investments. Rather than licensing an on-premises Microsoft Exchange server and a separate secure email gateway (SEG), organizations are able to use O365/M365 and the included email security provided by Exchange Online Protection (EOP). Overall, this approach has provided companies with a good email security posture. This paper reviews the capabilities Microsoft offers for organizations that have adopted Exchange Online Protection or Microsoft Defender for Office 365 and narrows down the required, supplementary email protection capabilities, as well as investigates the merits of an API-based architecture that provides seamless cloud integration with M365.
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