It's easy, its flexible and has all necessary tools for managing your inventory which makes it fast! We love how they are constantly improving their offerings through new features as well as by listening our feedbacks in order for us reach optimal results from them since Day Ones! They helped me with my issues of having too many ads (we have more than 1M) without knowing what happens when I have some kind of problem or issue during an auction. A lot less mistakes were made using this tool compared before we used another solution (which was not so good). It's easy to use and allows us to sell media to publishers in a transparent way. The customer service is also top notch. The ability to sell both inventory and inventory in a single exchange is a real time saver. We use Index Exchange to sell inventory to a variety of publishers. I wish we could sell inventory on the exchange for CPMs, but it doesn't seem like that is possible. We are able to sell our inventory in a quick and efficient manner.