Here’s what I use for my app https://songrender.com:

- DigitalOcean for servers/load balancer/database/object storage

- Netlify for the frontend and marketing site

- Cloudflare for CDN and DNS

- Stripe for payment processing

- Postmark for transactional emails

- Papertrail for logging

- Sentry for error tracking

- Fathom for analytics

- StatusCake for uptime monitoring

- GitLab for code hosting

- Trello for project management