The company I work for has a huge supplier database with a billion records, so Informatica Intelligent Cloud Services is a data integration tool used for migrating the legacy data to Informatica MDM (master data management), then moving to the cloud. It's GCP and PCF (Pivotal Cloud Foundry).
I've also used Informatica Intelligent Cloud Services for moving data to SAP Ariba and SAP S/4HANA.
Informatica Intelligent Cloud Services is used for multiple technology in legacy mainframes, Oracle, some PeopleSoft, some Java-based applications, some in-house, QAD to MDM, or to SAP S/4HANA, or SAP Ariba, so it has various use cases, from legacy to cloud, legacy to MDM, and MDM to S/4HANA, etc.
The feature I found most valuable in Informatica Intelligent Cloud Services is the mapping. You just drag, and it maps the data. Mapping is very easy, and it's no code.
When you migrate data or when the data interaction happens at the source and destination, the challenge is that you'll get different formats. The validation has to be done in the middleware, and the transformation should happen. In Informatica Intelligent Cloud Services, it's very easy to do data validation and transformation compared to any other tool.