# API Difference 9.0-preview1 vs 9.0-preview2

API listing follows standard diff formatting.
Lines preceded by a '+' are additions and a '-' indicates removal.

* [Microsoft.AspNetCore.Authentication.OAuth](9.0-preview2_Microsoft.AspNetCore.Authentication.OAuth.md)
* [Microsoft.AspNetCore.Builder](9.0-preview2_Microsoft.AspNetCore.Builder.md)
* [Microsoft.AspNetCore.Components.Server](9.0-preview2_Microsoft.AspNetCore.Components.Server.md)
* [Microsoft.AspNetCore.Server.HttpSys](9.0-preview2_Microsoft.AspNetCore.Server.HttpSys.md)

