From a scalability perspective for on-premise, all customers have some issues. I think Informatica has cloud capabilities and IBM MDM should be similar. In that case, scalability will not be a problem because that is the cloud functionality. You can do vertical scaling or horizontal scaling.

The product was web cloud-based, allowing us to scale based on demand. We employed anticipatory scaling, identifying nodes that required more resources and providing additional CPU, memory, and processing power accordingly.

There are no issues with scalability. So long as the company using the product puts it on the right sized platform as recommended, scalability will not be a problem.  

There were some issues.

Scalability was sometimes a problems depending on the pre-selection criteria.