Sometimes keeping it simple is the shortcut to getting it all wrong. While I am a believer in mastering all master data domains under the same vision and strategy, there are still best-in-class options when it comes to orchestrating processes and applying technology in the right chunks.
Customer Data Integration (CDI)
A recent post on this blog was called What Happened to CDI? This post examines the two overlapping disciplines Master Data Management (MDM) and Customer Data Integration (CDI). In a comment Jeff Jones argues that MDM vendors have forgotten about proper CDI workflows. Jeff says: “It seems the industry wants to go from Source to Match/Merge, instead of Source to Match/Identify and finally to Merge.” Please find and jump into the discussion here.
Also, this question was touched some years ago in the post The Place for Data Matching in and around MDM.
Product Information Management (PIM)
The product domain within Multi-Domain MDM also holds some risks of forgetting the proper ways of handling product information. In this domain we must also avoid being blinded by the promise of a single source of master data with surrounding processes and applied technology.
There are many end-to-ends to cover properly as exemplified in the post A Different End-to-End Solution for Product Information Management (PIM).
Liliendahl on Data Quality 