📖 Original Reference: Originally published with security architecture baselines at alexmaina.dev/m365-developer-rinnovo-automatico .

The Microsoft 365 Developer Program provides a free 25-user E5 enterprise sandbox subscription (worth over $1,300/year). However, it comes with a strict condition: it expires every 90 days unless Microsoft detects continuous developer activity .

If your sandbox goes idle, Microsoft terminates the tenant, permanently erasing your users, mailboxes, and configurations.

Here is an automated, serverless solution using Microsoft Graph API and GitHub Actions to generate valid developer telemetry and maintain your tenant indefinitely.

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