Linuxize posted a tutorial about setting up Nginx Server Blocks on Ubuntu 20.04.

How To Set Up Nginx Server Blocks on Ubuntu 20.04

A server block is an Nginx directive that defines settings for a specific domain, allowing you to run more than one website on a single server. For each website, you can set the site document root (the directory which contains the website files), create a separate security policy, use different SSL certificates, and much more. This article describes how to set up Nginx server blocks on Ubuntu 20.04.

How To Set Up Nginx Server Blocks on Ubuntu 20.04 | Linuxize