What are the MariaDB/MySQL servers types, and how do they differ?, e.g., 'standalone' vs 'embedded', vs ...?

When configuring a MySQL or MariaDB server, the terms '**standalone**' and '**embedded**' are referred to, but without reference to what they are, or what they do that is different from each other. ---------- * What does the term 'embedded' refer to? Is this like on an IP camera or something? * Also are these the **only** the two types of MariaDB/MySQL servers? Or are there other similar servers, like for example are 'galera', or enterprise other types of servers? * What is the difference between these two or other server types? In other words, what are they used for that is different, or how are they installed that are different, etc. ---------- Note: When installing, these groups seem to apply: [server] apply to both mysqld and embedded (note: 'mysqld' = 'standalone') [mysqld] apply to only mysqld [embedded] apply to only embedded ---------- *From context: in Debian desktop, I think I'm running a 'standalone' server only.*