Azure wins where Microsoft identity already lives

Technology

Compute is compute. What makes Azure the right place for an enterprise agent is that the users, the groups, and the conditional access rules it has to respect already exist in Entra ID, and the documents it retrieves already sit in SharePoint behind Graph permissions.

Build the same agent somewhere else and you rebuild that permission model by hand, then keep it in sync forever. For a company running on Microsoft 365, staying inside the tenant usually beats whatever technical edge another cloud is offering.

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Identity

Why an enterprise agent ends up on Azure

  1. Permissions come with the tenant

    An assistant answering from company documents has to honor who is allowed to see what. Inside a Microsoft tenant, Entra ID and Graph already carry that, so retrieval inherits the permission model instead of copying it into a vector store and hoping the copy stays current.

  2. The procurement path is already open

    Most large companies already have an Azure agreement, a security review on file, and committed spend to draw down. Azure OpenAI puts frontier models behind that same contract, with regional deployments and quota provisioned per deployment. The technical case rarely beats a purchase order that already exists.

  3. The surface is wide and keeps getting renamed

    Azure AI Foundry, Azure OpenAI, Machine Learning, App Service, Container Apps, Functions: several ways to do one thing, and docs that trail the renames. Expect a first deployment to take longer than the equivalent on Vercel or Cloud Run. No case study on this site runs on Azure.