- A/B testing: not supported yet, although we are thinking on building this. Would love to learn more from your use case! - Incoming referral, bounce rate, time on page are available through our built-in analytics. If you're familiar with Plausible https://plausible.io, we're using their self-hosted version to offer the analytics feature, so you should get everything they offer. - Not familiar with n8n.io, looks like it's similar to Zapier. We don't have any integration like this yet, but most functional components that you can add to your Typedream site (like forms, waitlist, etc) can be done using HTML embeds. For example, to add a form, you can embed an Airtable form in your Typedream site. This means that any automation supported by those tools can be used.
With that said, interactions such as allowing customer to buy a product, sending emails, and adding orders to Airtable/Google Sheets can be done by using a third party service, like Stripe Payment Links to allow users to buy a product, then use Stripe's functionality or Zapier/n8n.io integrations to send emails or add orders to Airtable/Google Sheets. This is also the case with comments, for example you can embed https://commentbox.io/ into your Typedream site to enable comments.
Hope this makes sense!