Not a US exchange, but much more straight forward example is Eurex.<p>They have 2 different electronic connections based on your latency&#x2F;throughput requirements.  One is more expensive than the other (<a href="http:&#x2F;&#x2F;www.eurexchange.com&#x2F;exchange-en&#x2F;technology&#x2F;connecting-to-the-exchange" rel="nofollow">http:&#x2F;&#x2F;www.eurexchange.com&#x2F;exchange-en&#x2F;technology&#x2F;connecting...</a>).  If I remember correctly, the HFT version also requires more onerous legal hurdles as well.<p>Personally, I view this as a <i>good</i> thing.  Why wouldn&#x27;t we want segmentation in exchange technology?