Zuckerberg, Bezos, other tech CEOs testify on competition

Four big tech chief executive — Facebook’s Mark Zuckerberg, Amazon’s Jeff Bezos (pictured), Google’s Sundar Pichai and Apple’s Tim Cook — will answer for their companies’ practices before US Congress at a hearing Wednesday by the House Judiciary subcommittee on antitrust.

The panel has conducted an investigation into the tech giants’ market dominance and their effect on consumers.