Hello Lee
Yes, based on the recent communication from Microsoft, your Azure AGW V1 using a Basic Public IP address is not impacted by the 20 September 2025 deadline for the general retirement of Basic IPs.
- Existing Application Gateway V1 deployments are fully supported until April 28, 2026. After that date, any active V1 resources will be stopped and deleted. Refer AGW-Retirement-FAQ
- However, it is recommended to plan the migration to Application Gateway V2 to take advantage of improved performance and features.
Therefore, you do not need to upgrade before April 28, 2026.
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