A true testimony to our abilities is the Ad-Server capable of handling 30 million ad impressions on a daily basis while running of a measly AWS small-Instance. All our ad calls goes through this ad-server. This is to allow a reliable way for waterfalling through our ad providers. There are other Ad-Servers claiming to provide this functionality. We just weren’t ready to pay substantial sum to an external party for something that we can build on our own with little effort. The server is capable of reaching 40k req/sec.