A free program from Microsoft that provides developers with the tools, resources, and sandbox environments needed to build solutions for Microsoft 365.
Thank you for reaching out to the Microsoft Q&A Forum.
Based on Microsoft’s documentation, the Microsoft 365 Developer Program may be used to design, develop, and test add-ins or solutions that are intended for future commercial release. This means you can use your Microsoft 365 Developer Program environment to build and validate your add-on before making it available commercially.
However, please note that the Developer Program is intended for development and testing purposes only and should not be used for production or live commercial workloads.
You can refer to the terms and conditions for more details: https://learn.microsoft.com/en-us/office/developer-program/terms-and-conditions
I hope this helps.
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