Siemens advanta originally Siemens management consulting has always been primarily focused on providing internal consulting services for Siemens mainly on large scale digital transformation projects. Since rebranding it has expanded its focus but core capabilities still potentially revolve around similar topics. I do not have the exact proportion but internal consulting projects for Siemens should still be a big focus. make sure you understand Siemens business on a high level And be ready to ask smart questions around those.  Again as highligted, be prepared to be asked standard consulting questions like any other consulting interviews as well 

good luck 

Expect any type of questions.
They currently run cost-cutting projects, digital transformation (adopting AI and IoT capabilities), top-line growth, cash management, procurement, and supply chain reorganization (in order of importance).

(editiert)