Today on Growth, Facebook Messenger's Head of Growth, Darius Contractor, joins Matt to talk through experiment development, design and tracking all using a system Darius developed called EVELYN (Experiment Velocity Engine Lifting Your Numbers). With EVELYN growth teams can input and prioritize their experiments as well as track them all the way from initial specing and design to build and completion.

Matt and Darius also talk through Darius's background in growth, time spent investing, his work at Dropbox and now his tenure as Head of Growth at Facebook Messenger.