Does Mix install dependencies automatically?

Yes. Hex, Rebar, and mix.exs deps are resolved on first boot.

Can I use releases instead of mix run?

Yes. Build the release locally and set START=./_build/prod/rel/myapp/bin/myapp start . Boosts production performance.

Does Phoenix LiveView work?

Yes. WebSockets, Channels, and LiveView are fully supported — BEAM VM shines in real-time apps.

Which Elixir and Erlang versions?

Elixir 1.19 on current OTP. We picked 1.19 because it's the version where the gradual type system (set-theoretic types) matured for real production use, the compiler stabilized after several refinement releases, and BEAM JIT integration delivered predictable performance gains. It's the first version combining language ergonomics, complete tooling (Mix, Hex, ExUnit, Dialyzer), and massive community adoption — production apps, updated libraries, and consolidated patterns.

Elixir + BEAM VM: concurrency at scale

Fault tolerance and Phoenix ready to ship. All the robustness of Erlang/OTP on a modern runtime.

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Why run on Square Cloud

Everything optimized, production-ready.

Actor Model concurrency

Millions of lightweight processes on BEAM VM.

Supervision and fault tolerance

Native OTP — self-healing systems.

Automatic Mix

Hex, Rebar, and deps resolved on first boot.

Phoenix, LiveView, Ecto

Full modern Elixir stack supported.

Ideal use cases

Where this runtime shines on our platform.

Phoenix and LiveView applications

Real-time web without heavy JavaScript, with reactive server-side rendering and Hooks.

Robust APIs with Plug and Ecto

Idiomatic backends with versioned migrations, repo pattern, and declarative validations in production.

Chat and pub/sub systems

Phoenix Channels and PubSub at scale with presence tracking and millions of concurrent connections.

Broadway and GenServer workers

Resilient data pipelines, concurrent processing, and supervision trees for critical workloads.

Discord bots with Nostrum

Elixir bot hosting with hot code reload, OTP fault tolerance, and ultra-low latency.

Fault-tolerant backends and IoT

Self-healing distributed systems for IoT, telemetry, and critical fault-tolerant workloads.

Available versions

Pick the track that best fits your project.

Current version

1.19

Single stable toolchain

Technical specs

Everything you need to configure your app.

Accepted extensions: .ex.exs
Dependency file: mix.exs
RUNTIME= aliases: elixir

Minimal config

Create a squarecloud.app file at your project root:

squarecloud.appElixir

MEMORY=512
DISPLAY_NAME=Meu App
VERSION=recommended

Frequently asked questions about Elixir Hosting

BEAM VM, Mix, Phoenix, and OTP.

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