☁️ Cloud & Infrastructure

AWS SDK .NET V3 Enters Maintenance Mode: Your Migration Clock Starts Now

Picture your .NET app humming along on AWS, oblivious to the sunset warning. AWS just flipped the switch: SDK V3 maintenance mode kicks in March 2026, with full end-of-support by June.

Timeline graphic showing AWS SDK for .NET V3 maintenance and end-of-support dates

⚡ Key Takeaways

  • AWS SDK .NET V3 enters maintenance March 2026, end-of-support June—migrate to V4 ASAP. 𝕏
  • V4 brings modular packages, better perf, AOT support; breaking changes are manageable with the guide. 𝕏
  • This accelerates .NET's AWS growth, echoing .NET Core's triumph—don't get left behind. 𝕏
Sarah Chen
Written by

Sarah Chen

AI research editor covering LLMs, benchmarks, and the race between frontier labs. Previously at MIT CSAIL.

Worth sharing?

Get the best AI stories of the week in your inbox — no noise, no spam.

Originally reported by AWS Developer Blog

Stay in the loop

The week's most important stories from theAIcatchup, delivered once a week.