"software" key for the Header Parser Project?

What does it mean by software key here?

A request to /api/whoami should return a JSON object with your software in the software key.

I’m sorry for this. I just needed to ask this. I’ll use this thread if I have an actual question to ask about the challenge itself. Thanks in advance.

Challenge: Request Header Parser Microservice

Link to the challenge:

Hey there,

when you have a look at the example project,
you can see this:

software: "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0"

So this seems to be the version of your internet browser.