It’s almost a decade since Jan Koum started the messaging app WhatsApp. In the year 2014, the social networking company Facebook bought the messenger services for a whopping $19 billion. After the deal, WhatsApp founder Koum was also on the board of directors on Facebook. 

Announcing his movement, Jan Koum said in his Facebook post, “It's been an amazing journey with some of the best people. But it is time for me to move on. I've been blessed to work with such an incredibly small team and see how a crazy amount of focus can produce an app used by so many people all over the world.”

Koum feels he is more than happy because people are using WhatsApp in more ways than he could have imagined. According to him the current team is stronger than before and will continue to do outstanding work. He will now focus on personal things which excite him outside technology, and he’ll keep cheering WhatsApp from outside. 

Commenting on his development, the founder of social networking site Facebook, Mark Zuckerberg said that he would miss working closely with him. He said, “I'm grateful for everything you've done to help connect the world, and for everything you've taught me, including about encryption and its ability to take power from centralized systems and put it back in people's hands.”

Wishing Koum for the future, Chief Operating Officer of Facebook, Sheryl Sandberg said that he had connected so many people around the world and she is grateful to have worked with him. 

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