For Krieger and Systrom's part, the co-founders vaguely addressed the controversy with a somewhat weak vote of confidence in their blog post.
Systrom and Krieger resigned as chief executive officer and chief technical officer of the photo-sharing app last week giving scant explanation for the move.
Mosseri was the most logical successor to Systrom, based on his resume and Facebook's growing reliance on Instagram as a landing spot for younger consumers and as a venue for product advertising. "We're confident that under Adam's leadership, Instagram will evolve and improve and we look forward to the future of the product and community".
Last week, Systrom and Krieger said they planned to take time off and explore their "curiosity and creativity again". He succeeds Kevin Systrom and Mike Krieger, who abruptly announced their departure on September 24th. Facebook CEO Mark Zuckerberg has also wielded Instagram Stories as the most devastating weapon in his ongoing war against Snapchat, as Instagram's live story feature has long-since eclipsed Snapchat's entire active user base. Then a year of data breach scandals, regulatory scrutinty, and plateauing user growth put more of the social media giant's focus on Instagram, its crown acquisition jewel. Systrom and Krieger were widely reported to have been unhappy with recent changes Facebook was making to the Instagram app and business. He was recruited to the Instagram team recently. Prior to Instagram, he was in charge of Facebook's News Feed for a number of years and before that he led Facebook Home, a failed attempt to sell a Facebook-branded version of Android. "We believe that Adam will hold true to these values and that Instagram will continue to thrive". Instagram isn't separate from Facebook, just another arm of it.