Tom Ryan, chief executive office of Pluto TV, has been promoted to president and chief executive officer of ViacomCBS Streaming, overseeing all streaming and digital platforms including CBS All Access.

He replaces Marc DeBevoise, who is departing and is chief digital officer of ViacomCBS, and president/CEO of ViacomCBS Digital.

ViacomCBS said that for the first quarter of this year, all streaming and digital video revenue for all platforms (which includes Pluto TV) grew 51% to $471 million.

Under Ryan, Kelly Day, chief operating officer of ViacomCBS Networks International, will add the position of president of Streaming for ViacomCBS Networks International, overseeing all non-U.S. digital and streaming business.

She replaces Pierluigi Gazzolo, who is leaving as president, Streaming and Studios, of ViacomCBS Networks International.

Ryan has been chief executive officer and co-founder of Pluto TV since early 2014, a streaming service now reaching 33 million monthly active users globally. Viacom bought Pluto in January 2019 for $340 million.

DeBevoise had been with CBS Interactive, which is now part of ViacomCBS Digital, since 2011.

He has been responsible for all of CBS digital strategy and direct-to-consumer streaming business overseeing CBS All Access/Showtime, which will become Paramount+, as well as CBSN, CBS Sports HQ and ET Live.

Earlier this year, ViacomCBS said the pair of streaming services had hit a total of 13.5 million.