I use the solution for various reasons in projects. It helps with data warehousing, file cleansing, and various business transformations. 

My experience with Talend Open Studio for MDM is supporting an existing customer.

It is used for master data management and is often utilized by industries, companies, or organizations that do a lot of acquisitions and mergers. In cases where there is a lot of different customer information from different areas, they tend to use MDM. Also, in certain regions where a customer is registering in multiple domains, they use this tool to create the master record.