The history of Inventor has been a long journey in how it has been bundled. First we had the Autodesk Inventor Suites. There were four of them.
Autodesk Inventor Suite – This included Inventor, AutoCAD Mechanical Desktop, AutoCAD and Vault Basic
Autodesk Inventor Suite Professional – This included Inventor Pro, AutoCAD Mechanical Desktop, AutoCAD and Vault Basic
Autodesk Inventor Suite Routed Systems – This included Inventor with Cable & Harness and Tube & Pipe, AutoCAD Mechanical Desktop, AutoCAD and Vault Basic
Autodesk Inventor Suite Simulation – This included Inventor with FEA, AutoCAD Mechanical Desktop, AutoCAD and Vault Basic
As time went on AutoCAD Mechanical Desktop was retired as Inventor matured and grew in leaps and bounds. The suite was then renamed to AutoCAD Inventor Suite as companies were all familiar with the AutoCAD brand.
Autodesk then renamed the suite to Autodesk Product Design Suite and added a whole bunch of new products. There were 3 levels Standard, Premium and Ultimate. Depending on which suite you bought, you would get additional or enhanced software packages. The additional software was Autodesk AutoCAD Electrical, Autodesk 3DS Max Design (which later was changed to Autodesk 3DS Max) , Showcase (Retired 2017), Autodesk AutoCAD Raster Design, Autodesk Alias Design and either Autodesk Navisworks Simulate or Manage.
When the licensing changed from perpetual to desktop subscription we had another change in name to the Autodesk Product Design Collections but not much additional software if you really look at it. They actually seemed to have taken software out (the retirement of Autodesk Showcase) and I personally did not see the value in it until last week.
They have now included two additional software packages which I really see adding value to the collection. That is Autodesk Nastran In-CAD and Inventor HSM. With this addition they have renamed the Collection to more truly reflect what the Collection is aimed at. Product Design & Manufacturing Collection. In doing this they also stopped the individual product sales of these packages so if you do want to purchase it, you would need to purchase the Collection. But kudos to Autodesk for including these software packages as they really add some punch to the Collections.