For which SAP modules is BODs most used.

I work in Sap HR module mostly and currently use third party tools for extraction, and standard tools like idocs, lsmw, etc. for importing.

My question is, is BODs used also in the HR module, or in which modules is it intended.

I have googled to try and find an answer but don't really get a definite reply.

Thank you kindly in advance.

Glen.