Pump was connected to our AWS account about a year ago (before my time), and honestly it's just been quietly doing its job in the background ever since. The savings show up every month without anyone on the team having to think about it.
To be completely honest, it is difficult to find a positive aspect of our experience with Pump. While the company markets itself as a provider of significant client benefits and cloud cost savings, we found that they consistently failed to deliver on these commitments.