Twitter is replacing its head of product. Again. - Recode

Tumultuous times for Twitter

"Seibert was the fourth person to run Twitter's core product since early 2014. He took over the day-to-day consumer product responsibilities from then-VP of Product Kevin Weil, who would later move on to take the same role at Instagram as part of a massive executive exodus from Twitter in January. Seibert's appointment was the first major restructuring move by CEO Jack Dorsey, who was still technically "interim" CEO at the time.

Now Seibert is out, or at least relocated, and joins a long list of Twitter product bosses who have either left or been pushed out in the past two years. It's a position that Twitter can't seem to lock down — The Verge's Casey Newton once likened it to the Defense Against the Dark Arts post in the "Harry Potter" series, where no professor seems to survive longer than a year."

Twitter is replacing its head of product. Again. - Recode