When Olivia Matthaei, a consignment store sales clerk, needs to check whether a designer handbag is authentic, she knows the drill. She grabs a custom camera with a microscope lens

Splitting TikTok’s U.S. operations from those of its Chinese parent would pose myriad technical challenges. Photo: Jakub Porzycki/Zuma Press By Aaron Tilley Close Aaron Tilley Biography @aatilley aaron.tilley@wsj.com and Euirim

Google, playing catch-up with Amazon in the cloud, said computing-services sales cushioned the drop in its advertising business in the June quarter. Photo: Sean Gallup/Getty Images By Aaron Tilley Close

Elon Musk’s Tesla aims to deliver 500,000 cars and sport-utility vehicles this year, though the company said economic uncertainty will make that more difficult. Photo: Ringo H.W. Chiu/Associated Press By

By Dana Mattioli Close Dana Mattioli Biography @DanaMattioli dana.mattioli@wsj.com and Cara Lombardo Close Cara Lombardo Biography @CaraRLombardo cara.lombardo@wsj.com July 23, 2020 12:08 pm ET When Amazon.com Inc.’s venture-capital fund invested

Twitter said it believed the hackers targeted employees who had access to its internal systems and tools. Outside the company’s Manhattan office on May 13. Photo: John Nacion/NurPhoto/Zuma Press By

Russia’s President Vladimir Putin has demanded the country have a coronavirus vaccine by the fall. Photo: Alexei Druzhinin/Kremlin/Reuters By Jenny Strasburg Close Jenny Strasburg Biography @jennystrasburg jenny.strasburg@wsj.com in London and

Spotify was among several apps hit by outages on Friday. Photo: Andrew Matthews/Zuma Press By Parmy Olson Close Parmy Olson Biography @parmy parmy.olson@wsj.com and Sarah E. Needleman Close Sarah E.

TikTok has been downloaded 660 million times in India. Photo: francis mascarenhas/Reuters By Rajesh Roy Close Rajesh Roy Biography @rovingrajesh rajesh.roy@dowjones.com and Liza Lin Close Liza Lin Biography @liz_in_shanghai liza.lin@wsj.com

Jan Marsalek was in charge of Wirecard’s relationships with three third-party partners at the center of investigations, according to people familiar with the company. Photo: Dave Bedrosian / Future Image/Zuma