Using AU/VST etc. to run externally was a development that did not happen until later in the 2000s. Waves in particular, who I worked with in the 2007-2014 era

Using AU/VST etc. to run externally was a development that did not happen until later in the 2000s. Waves in particular, who I worked with in the 2007-2014 era, did not do this until Linux got into shape to allow them to build plugin/DSP servers.