Back in 2014, Meta separated the Messenger and Facebook apps. Meta is now reintegrating Messenger into the Facebook app. This feature is currently in testing on Facebook. Messaging is among the handful of activities that people engage in more than social networking. In some countries, 85 percent of people use Facebook, while 95 percent use SMS or messaging.
It intends to bring the Messenger experience back to the Facebook app in order for users to share what they discover on Facebook with their friends without having to switch apps.