How I Run Four SaaS Products on a Single $24/Month VPS

I'm a solo founder running four production SaaS products on a single $24/month Vultr VPS. My background is in psychology, not computer science — I taught myself to code through building projects and leaning heavily on Claude Code as a development partner. Here's how the infrastructure works and what I've learned. The Setup The server is a Vultr High Frequency instance (2 vCPU, 4GB RAM) running Ubuntu 22.04 in the New Jersey region. It hosts: LocalMention.io — AI visibility audit tool for local businesses (Next.js) FixMyRecord.io — Automated data broker removal service (Next.js) SetupLens — Stock scanner for momentum trading setups (Flask + React) Market Dashboard — Discord-integrated market data dashboard (Flask) All four run behind a single Nginx reverse proxy, each on its own subdomain or domain, with Let's Encrypt SSL certificates managed through Certbot. How It Fits Together Each product runs as a systemd service, which gives me automatic restarts on crash, easy log management with