We are currently not using PubMatic anymore because of the awful experience that we had. When we were using it we were in a beta version that PubMatic clearly didn't bother to learn or understand fully before opening it up to our company. We were using them for two different things, programmatic and a form of reach extension called PubConnect. They had extremely limited capabilities on all aspects of the product and even worse communication skills. This was only used in one part of the company, and didn't last very long before we cut the cord. It caused more problems than it was supposed to fix.