Rust for the core application, Elixir for the backend, frontend, API, data layer. Javascript is pretty much non-existent, all client-side interactivity is done by LiveView.

Packaged into a podman container and deployed to a Hetzner dedicated server. Storage on PostgreSQL, probably the only thing I would rather not have to manage, but honestly single node is perfectly fine for an MVP. Provisioning is done with Terraform and Ansible.

Future expansion (pretty far away, post launch and post paying customers) is add more geo-distributed worker VPSes, talking to the central coordinator via Wireguard link.

Setup is pretty cheap, fast, scales really well, and it's easy to understand. With additional services (mail, monitoring, etc.) should be less than $100/mo all inclusive, and that should be enough for up to ~100 paying customers.

I have no plans of changing any part of this setup for the next decade. I'm too old to want to get golden handcuffed to turn key solutions and cloud products that just introduce complexity and become VERY expensive, and badly documented, past the demo stage.

Started in November, closed alpha release with users next month, launching Q2 2023.