Improving Economies for Stronger Communities (formerly known as International Executive Service Corps) is an international economic development not-for-profit organization with headquarters in Washington, D.C. IESC was founded in 1964 by David Rockefeller, States M. Mead III, Frank Pace, Sol Linowitz, and other American business leaders. IESC has worked in sub-Saharan Africa, Europe and Eurasia, Asia and the Near East, and Latin America and the Caribbean. Geekcorps is a division of IESC.

David Rockefeller was an American economist and investment banker who served as chairman and chief executive of Chase Manhattan Corporation. He was the oldest living member of the third generation of the Rockefeller family, and family patriarch from 2004 until his death in 2017. Rockefeller was the fifth son and youngest child of John D. Rockefeller Jr. and Abby Aldrich Rockefeller, and a grandson of John D. Rockefeller and Laura Spelman Rockefeller.