Juan Diego Calle is a Colombian-American serial startup entrepreneur: He is the founder and CEO of .CO Internet SAS, a company acquired by Neustar, Inc. in April of 2014. Prior to that, he launched and ran TeRespondo.com, a performance-based advertising network, which he sold to Yahoo in 2005. As Chairman of STRAAT, he co-founded Building.co, Classic.com, POP.co and BoutiqueHotels.com.