What is Integrated Cloud Email Security (ICES) and Why do you Need It?

This document is an industry overview of Integrated Cloud Email Security (ICES), explaining why ICES emerged, how it augments Microsoft 365 native email security, common deployment methods (Graph API post-delivery reclamation and mail-flow diversion), and the role of ML/NLP/NLU in detecting advanced phishing and data-protection use cases. It highlights operational benefits such as rapid deployment and vendor consolidation, limitations like Graph API throttling and native client gaps, and the extension of ICES toward email data protection (EDP) to reduce human-caused data breaches.