Platform and integration
Microsoft Graph
Microsoft Graph is the unified API gateway Microsoft provides in front of Microsoft 365, Entra ID, Intune, Windows, Teams, SharePoint, Outlook, OneDrive, and the wider Microsoft cloud.
Why Microsoft Graph matters in a Microsoft estate
Microsoft Graph matters because integrations, APIs, virtual machines, and delivery pipelines are how Microsoft estate data and automation become usable. These terms help readers understand how systems connect before they decide what to build or automate.
How Microsoft Graph shows up in practice
It exposes users, groups, licences, devices, mail, calendars, files, security signals, and administrative actions through one consistent REST endpoint, SDK set, and permissions model, rather than a separate API per service. Before Graph consolidated this, integrating with Microsoft 365 meant working against several distinct APIs, each with its own authentication pattern and data shape. Graph replaced that with a single object model and a single OAuth 2.0 and Entra app registration flow. This is why nearly every serious piece of Microsoft cloud tooling built in the last several years, including licence optimisation, device management, and security reporting products, is built on top of it rather than around it.
Access to Graph is governed by scoped permissions: delegated for actions performed on behalf of a signed-in user, or application-level for unattended background access. The distinction between read and write scopes is the practical line between a tool that can see tenant state and a tool that can change it. Reading licence assignments, device compliance state, or Secure Score data needs only read scopes, while an offboarding or remediation action, such as revoking sessions, removing a licence, or updating a Conditional Access policy, needs write scopes. This is why a well-built tool requests the narrowest permission set that its features actually use, and treats any write-capable app registration as something a tenant admin should review carefully before consenting to.
Working with Graph at any real scale surfaces two practical engineering problems every vendor in this space has to solve properly. The first is throttling: Graph enforces rate limits per tenant and per resource type, meaning a naive full-tenant licence or device pull can be rejected or slowed under load and needs batching, paging, and back-off handled correctly. The second is change tracking: Graph exposes delta queries that return only what changed since the last sync, rather than forcing a full re-pull every time. This is the difference between a reporting tool that can refresh near real time and one that lags badly on anything beyond a small tenant.
Graph's audit and activity data, including sign-in logs, directory audit logs, and Intune device event data, is also the evidence layer that tenant backup, drift detection, and offboarding audit trails are built from. A tool that can show a defensible, timestamped record of who changed what, or that every step of an offboarding run succeeded or was skipped, is drawing that record from Graph's own audit surface rather than reconstructing it independently. For IT teams evaluating any Microsoft 365 or Azure tool, the practical questions worth asking are which Graph permissions it requests, whether it separates read access from write access clearly, and whether it is transparent about what it does with the data it pulls. This matters because Graph access is effectively a standing key into the tenant.