What is Dropbox Forms built on?

The Dropbox Forms backend is built on Elixir, making Dropbox Forms fast and scalable.

Fun fact: Whatsapp, the global messenger app, is built on Erlang which Elixir is based on. The Whatsapp system handles more than 10 billion messages every day and can handle the volume because of its architecture.

Both Dropbox Forms and Whatsapp reap scalability and fault tolerance benefits because they’re built on Erlang.