Does anyone know if WhatsApp uses Scrum (or similar methodology)? Also, do they do pair programming? My company has recently learned about scrum and pair-progr

Does anyone know if WhatsApp uses Scrum (or similar methodology)? Also, do they do pair programming? My company has recently learned about scrum and pair-programming, that seems like the only way to success to them. So, it would be nice to know how other successful companies are organized and develop software.