As a data integration platform, it is easy to use. It is quite robust and useful for volumetric analysis when you have huge volumes of data. We have tested it for up to ten million rows, and it is robust enough to process ten million rows internally with its parallel processing. 

Its error logging mechanism is far simpler and easier to understand than other data integration tools.

The newer version of InfoSphere has the data catalog and IDC lineage. They are helpful in the easy traceability of columns and tables.

We are mostly using transmission rules. It has a lot of functions and logic related to transmission. It is a user-friendly tool with in-built functions.

We mainly use the designer and developer qualities. We use the basic features that we have.

They have many good features. The Hierarchical Data Stage is good.

IBM InfoSphere DataStage is a good product.

It is quite useful and powerful.

The ETL features are the most valuable to our clients.  

It's a robust solution.

The performance optimization is quite good in DataStage. It provides parallelism and pipelining mechanisms. I have not found those in Informatica or Talend.

The key feature for me is the flexibility this solution offers. 

The most valuable feature is the data integration for data warehousing.