We are pleased to announce the general availability of .NET 9! 🎉

ASP.NET Core in .NET 9 includes many new features improvements, including improved performance & lower memory usage, build-in OpenAPI support, lots of Blazor enhancements, expanded Native AOT support, and much more.

Read about the final release on the .NET Blog announcement.

ASP.NET Core updates in .NET 9:

• What's new in ASP.NET Core in .NET 9 documentation.
• Breaking changes

.NET 9 Release:

• Announcement Blog
• What's new in .NET 9
• Release notes