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BGP, which stands for Border Gateway Protocol, is a routing protocol. BGP is the routing protocol that directs traffic on the internet, getting your internet traffic to its final destination. The internet is huge. The number of active websites is approximately 200 million, with more than 250,000 new sites being added every day. BGP can be used for traffic engineering due to its tunability. It is incredibly scalable and can handle an incredible number of routes. Even organizations like AWS or Google use BGP to connect to their customers.