There's also often no one single language that a modern software system is expressed in. Even when there's ostensibly only one language used (Python, eg.) the t

There's also often no one single language that a modern software system is expressed in. Even when there's ostensibly only one language used (Python, eg.) the total system behavior of a website is also typically expressed in SQL, sh, provisioning APIs, web server config, database config and possibly a variety of other DSLs.