When you are starting out, the stack debate is a trap. You will see threads about ten databases, six auth providers, four email services, and three deployment targets. Most of it does not matter for your first product.
Here is what does.
Vercel - where it runs
You push code, Vercel deploys it. That is it. Preview deployments on every branch, production on main, environment variables in the dashboard. No servers to manage.
Supabase - auth and data
A Postgres database plus magic link auth in one product. You get tables, row-level security, and a working login flow without setting up anything.
Stripe - money
Hosted Checkout. You create a product, get a price ID, point your checkout button at it. Stripe handles the card form, the tax logic, and the receipt.
Resend - email
Transactional email that does not feel like 2014. You verify a domain, write the template, send it from the API. Welcome emails, purchase confirmations, password resets.
How they connect
User → Vercel (Next.js app)
→ Supabase (auth + data)
→ Stripe (checkout + webhook)
→ Resend (transactional emails)
The webhook is where most beginners trip. Stripe tells your backend "this user paid." Your backend writes to Supabase. Your backend asks Resend to send the receipt. Get this loop right and 80% of a small SaaS works.
Where to learn this end-to-end
The Full Course has dedicated modules for each tool - and one final module that ties them all together with the security and UAT checks most tutorials forget.
Or grab the free Scorecard first if you want to validate your idea before picking a stack.