• Ease of use
• Excel interface
• Simplicity
• Soft delete support
• Sophistication of business rules
• Price (FREE for sql server enterprise license)
• Hierarchy management 
• Security integration with AD
• Very fine grained security
• Easy to build (and extendable) business rules
• Automatic Notification
• Versioning
• Integrated boolean business rules
• Change detection
• Integrated workflow
• Staging support
• Publication support
• Ability to propagate from one repository to another
• Ability to share reference data across models
• Integrates as a web part
• Flexibility
• Includes both batch staging process and Excel data loading
• Unused area of hierarchies to easily identify members not assigned

It has a very good feature called Excel plug-in. You just have to install the plug-in, and then it directly connects to the MDS instance where you can maintain and manage your data and publish it right through Excel. You don't need to go to the front end to make any changes.

It has easy integration with SQL Server, and you can use SSIS to do the ETLs. It is a part of the Microsoft stack. It works with most of the Microsoft stuff.

The most valuable feature of the solution is Excel because it enables even non-technical people to directly interact with the BI system which is important because most of our people are not from the IT sector. The second important feature is that while we are using Informatica and other SAP tools which are less customizable, MDS increases customization for us and that is very useful. MDS, SQL and SSIS make the solution much more powerful. The main reason we use this solution is because of its customization. 

It gives you the flexibility to have in-depth experience. It allows you to collect data and save it as a golden record. You have the flexibility for data stewardship.

They also have an Excel API where you can do everything from Excel. You can make changes with the connectivity on the Excel API.

It's very easy to use.

One of the main features I have found useful is the integration with Azure active directory.