[tracker1]

I'm not familiar with YARP, but isn't Aspire still using Kestral? I think of Aspire as more of a code driven, flexible Docker-Compose alternative.

[SideburnsOfDoom]

YARP is (Yet Another) Reverse Proxy, and Aspire is in a similar space to Testcontainers - i.e. orchestration of multiple executables for test (and other things). No it's not an alternative to Kestrel.

These are three different tools that do different things. The point is that these are better examples of the "modern MS ASP Infra" space than "nginx, iis".