When you hear someone say "we're at scale" they could mean two things: The team, development, and code are at scale, or the amount of active users is at scale.

As a mobile team grows in headcount, they must tackle new types of challenges including scaling development. I will be sharing what problems companies like Google and Uber encounter and how they solve them, from modularization to frameworks to different built tooling. I will also discuss why many of these companies are often slow to adopt new toolings such as Jetpack Compose, Coroutines, and Kotlin.

An app can also be at scale based purely on the number of daily active users. This requires a whole other tactic around making sure monitoring is in place for performance and reliability, along with dealing with the long tail of OEM and regional differences.