Microsoft Advertising is retiring the SOAP API and fully transitioning to the REST API by January 31, 2027. Starting October 1, 2026, all new features and enhancements will be available only through the REST API, with a 6-month transition period for customers and partners to migrate. Existing SOAP integrations will continue to operate until deprecation. The REST API provides a modern, scalable, and consistent integration experience, featuring stronger SDK support, standard HTTP/JSON architecture, easier debugging, and broader programming language compatibility.
Transition Timeline and Impact
- October 1, 2026: New features and enhancements exclusively on REST API.
- January 31, 2027: SOAP API fully deprecated.
- Existing SOAP integrations remain functional during the transition period with no immediate impact.
Benefits of REST API
- Supports faster innovation and long-term growth.
- Offers a scalable and consistent integration platform.
- Enables easier integration and debugging.
- Provides stronger SDK support and broader programming language compatibility.
Migration Guidance
- SDK Users: Follow SDK migration documentation to simplify the transition.
- Non-SDK Users: Update implementations to use REST API URLs and request formats.
- Opportunity to switch to SDKs if not currently used, easing future updates.
- For complex integrations, extended migration plans can be arranged through Microsoft Advertising support.
The transition aims to unlock new capabilities and ensure continued access to future Microsoft Advertising API innovations.
