What is the difference between windchill and windchill pdm link ?Can you please help me out ?

Hi

Windchill (formally "Foundation") was historically the "high end" solution for large company

and PDMLink a pre configured solution

Now Windchill is more the solution brand.

and PDMlink the PLM module of the solution (Doc, CAD, Part, BOM, change management)

MPMLink is the manufacturing module (mBOM, routings, etc ...)

Supplementary to the reply of Gregory, based on the Windchill Technology you have several 'Links', all specific solutions ready to be used: PDMLink as PLM-solution, ProjectLink as project-extension for PLM, SupplierLink, MPMLink, PartsLink, RequirementsLink, ...