IAC’s family of websites is one of the largest in the world, comprised of more than 150 brands and products.


Eric Esterlis

Eric Esterlis

Co-CEO, IAC Applications

Eric Esterlis is Co-CEO of IAC Applications, home to IAC’s global applications businesses across browser, desktop and mobile. Eric is responsible for spearheading technology innovation, software development and operations for IAC Applications brands, which include Ask Applications (browser-based software) SlimWare (award-winning PC optimization software) and Apalon (top 10 iOS developer of mobile apps).

In an IAC career spanning 13 years, Eric most recently served as Chief Technology Officer for Mindspark, the former title of IAC’s browser applications division. He also previously served as the Senior Vice President and CTO at Interactive Search Holdings (ISH), where he led a team of technology developers — a group he built from the ground up. While there, he was accountable for the successful development of popular websites including IWON, Excite, Myway and the creation of Fun Web Products, a portfolio of sites focused on entertainment and self-expression.

Prior to his role at ISH, Eric served as First Vice President of Fixed Income Trading at Morgan Stanley. There he managed a team that developed and supported the company's trading systems. Eric started his career at IBM, where he developed software at the labs in Fishkill, NY. He earned his Master’s degree in Computer Science from the Courant Institute of Mathematics at New York University and received a B.S. in applied mathematics from the Georgia Republic University.

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