Big Tech CEOs to defend their companies before U.S. Congress

The chief executives of four of the world’s largest tech companies, Amazon.com Inc, Facebook Inc, Apple and Alphabet’s Google, plan to argue in a congressional hearing on antitrust on Wednesday that they face intense competition from each other and from other rivals.

The testimony from Amazon’s Jeff Bezos, Facebook’s Mark Zuckerberg, Google’s Sundar Pichai and Apple’s Tim Cook, which was released Tuesday, portrays four chief executives who are looking over their shoulders at competitors who could render them obsolete.