Microsoft Azure
Azure Communication Services retires September 30, 2028; onboarding limits from October 23, 2026
In effect since Oct 23, 2026
- What stops working
- Since October 23, 2026 Microsoft limits onboarding and expansion on retiring ACS services (customers without a resource created before that date cannot acquire phone numbers for PSTN calling and SMS). Full retirement of ACS as a standalone offering: September 30, 2028.
- Who is affected
- Apps using ACS for SMS, PSTN calling, chat, email or video.
- Official migration path
- Microsoft points to Teams, Dynamics 365 and partner CPaaS providers.
- What the official path does not cover
- Phone numbers, compliance registrations and messaging flows must move to another provider; two-year runway but new capacity is already restricted.
- Source
- Microsoft Learn — ACS retirement and breaking changes guide (announced Sep 23, 2026) · announced 2026-09-23 · verified 2026-11-07
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