Suggestions: Update the Articles about "Back End" in the Resources

There are excellent articles explaing what a “back end” is in software development written 9/4/2021:
“A back end is a combination of servers and databases. Servers control how users access files. Databases are organized and structured collections of data.”

This is a good definition from the article. Can you update it to reflect the changes from serverless architecture and other industry technology change?
It can include other components that make up a back end, such as api services, and 3rd party components.