>>Which takes me back to the first line of this message

The issue is that the MS-centric world uses multi-threaded and free-threaded interchangeably. From that viewpoint, STA is not multithreaded but from the IIS web page viewpoint, it definitely is. The comparison with VFP simulated multithreading using separate persistent server apps with their own runtimes etc, is fair IMHO- though in the real world a proper IIS server can handle 8 WW instances without blinking and with huge throughput, so this may not be a huge deal. Certainly Claude's mtdll scales instances up and down automatically with minimal input from the developer and it certainly is quick AND it can be reg-free, so it's a significant offering.