Railway is an infrastructure platform where developers deploy applications, databases, volumes, functions, and background jobs. Code is built with Nixpacks or a Dockerfile and served on a public domain with automatic TLS.

Git deployment - Connect a repository for automatic deploys on push, or deploy a local directory with the CLI.
Managed databases - Provision Postgres, MySQL, Redis, MongoDB, or ClickHouse templates with backups.
Preview environments - Spin up an isolated copy of the stack for each pull request.
Volumes and storage - Attach persistent disks and S3-compatible buckets to services.

It is used by developers and small teams that want hosting, databases, and environments without running their own servers.