Ten years ago today, Kevin Systrom and Mike Krieger released Instagram into the world. Less than a year and a half later, Facebook acquired it, in what is widely regarded as one of the shrewdest acquisitions in the history of the tech industry. It is now one of the most popular apps in the world and has thrived during the pandemic. But regulators and competitors continue to nip at its heels — TikTok has reportedly now surpassed it as the second-most popular app for teens, after Snapchat — and there’s no telling what it might look like another decade from now.