Translating Java to Kotlin at Scale

Meta shifted their giant Android codebase from Java to Kotlin over years.

How Meta built Threads in 5 months

Meta shares how they cranked out Threads in just five wild months.

Deploying key transparency at WhatsApp

Meta rolls out key transparency to lock down WhatsApp’s security.

From zero to 10 million lines of Kotlin

Meta ditched Java for Kotlin across their massive Android codebase.

Project LightSpeed: Rewriting the Messenger codebase for a faster, smaller, and simpler messaging app

Meta rebuilt Messenger from the ground up for speed and simplicity.

Mobile Performance: Tooling Infrastructure at Facebook

Meta’s tooling keeps their mobile apps running smooth and steady.