
This new O'Reilly report, sponsored by CoreView, provides IT and security leaders with a tenant-level framework for understanding and reducing Microsoft 365 risk.
Subscribe once and every chapter lands in your inbox the day it's released.

Topics ahead include privilege, configuration drift, SharePoint exposure, recovery and AI readiness.
This first early-release chapter will help you understand:
Microsoft 365 shapes who can access information, how collaboration is governed, how changes get made, and how quickly teams can recover. But often identity, SharePoint, configuration, security, backup, and AI readiness are managed separately.
This creates blind spots, where excessive access, misconfigurations, security gaps, and recovery risks can go unnoticed until they become a problem.
Chapter 1 reveals why true tenant resilience depends onviewing these risks together.
Whether you oversee your organization’s entire Microsoft 365 tenant or just part of it, resilience depends on understanding how identity, configuration, SharePoint, AI readiness, and recovery planning work together.
Yet responsibility for these areas is often fragmented across teams, which can mean that gaps between them remain hidden. Without a tenant-wide view, it’s harder to know where your biggest exposures lie, how one weakness could amplify another, or what needs attention first.
This report helps you see those risks in context, identify your biggest exposures, and prioritize action.
Simon Bisson is a respected technology journalist and analyst who has spent decades covering enterprise IT, cloud platforms, software development, and Microsoft’s business technology ecosystem. His writing is valued for translating complex platform shifts into clear, practical insight for technology leaders and practitioners.

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Chapter 1 arrives late October 2026.