This is a great time to be solo building your company. Most of the services have generous free tier. These are the ones I use personally.
* Hosting + DNS with AWS & Cloudflare
* Code with GitHub and mirror to GitLab
* Domain with Godaddy
* Transactional emails with PostMark
* Errors with Sentry
* Docs, Mail, Calendar with Google Workspace
* Hosting + DNS with AWS & Cloudflare * Code with GitHub and mirror to GitLab * Domain with Godaddy * Transactional emails with PostMark * Errors with Sentry * Docs, Mail, Calendar with Google Workspace