“Bring your AI to work” is here: Microsoft edition - What Multiple Account Access to Copilot means

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Multiple Account Access to Copilot On October 1. 2025 Microsoft released a blog post explaining how employees now can use Copilot from their personal 365 plans to work on organizational data. This is of course, an extension of the already existing "Multi account" feature that was released for corporate accounts a "couple of months" ago. In other words, “bring your own Copilot” is now a real thing in Word, Excel, PowerPoint, Outlook, and OneNote on desktop and mobile, with enterprise protections intact. “Bring your AI to work” is an important topic, and banning AI altogether might not be the answer. Whether sanctioned or shadow, AI has already entered everyday knowledge work. Microsoft’s new multi‑account access offers a safer path where employees can use Copilot from their personal Microsoft 365 subscriptions on work files, while the file’s access, auditing, and compliance still flow through the work identity and tenant. That’s better than users copy‑pasting sensit...

Microsoft 365 Copilot Chat - Pay As You Go

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Here is an update that really caught my eye this week. Microsoft is introducing Microsoft 365 Copilot Chat (BizChat) as a Pay-As-You-Go (PayG) service. This option will be available starting late January 2025, with full availability by mid-February 2025.

Key Highlights:
  • Flexible Access: Organizations can offer Copilot on company data without requiring individual licenses. However, a license is still needed for Copilot within applications like Outlook, Teams, and PowerPoint.
  • Controlled Costs: The PayG service is disabled by default and only activates after billing setup in the Microsoft 365 admin center, preventing unexpected expenses.
  • Easy Setup: To enable PayG billing, navigate to "Settings -> Org Settings" in the Microsoft 365 Admin Center. An Azure subscription and a dedicated Resource Group are required.
For more details on Azure subscriptions and Resource groups, refer to these articles:
  • Create your initial Azure subscriptions - Cloud Adoption Framework | Microsoft Learn
  • Manage resource groups - Azure portal - Azure Resource Manager | Microsoft Learn

The PayG model offers a low-cost entry point to Microsoft 365 Copilot Chat, ideal for testing or intermittent usage. It provides flexibility to scale usage based on actual needs, avoiding the cost of unused licenses. However, it's crucial to monitor usage to prevent unexpected costs, as PayG can be more expensive than fixed licenses if not managed properly. For consistent, high usage, a fixed license per seat may be more cost-effective.

Fixed licenses offer predictable costs and additional features, making budgeting simpler. While PayG is limited to the Chat application, it’s a great way to introduce Copilot into your organization.

It is going to be interesting to see if organizations embrace this new model, and how it potentially can drive the usage of generative AI even further within companies.