Once a year, Facebook invites developers from various companies to a cosy place somewhere in East London to talk for a day about scaling challenges on mobile. This year, Mihaela and Pascal join the fun and talk to a bunch of the attendees, which are for the first time not (all) Facebook employees. Tune in to learn how Deliveroo are moving from Java to Kotlin, the BBC is using their app to find a more inclusive audience, how Asos moved away from never-ending feature branches and much more.

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