WordPress Installing WordPress Locally Installing WordPress Locally Setting up the Environment

Local folder naming convention. Curious: why localwp.dev?

Around 3:10, Alena names her local folder localwp.dev. Curious as to why.

The first part (localwp) seems straightforward. But it's not often that I see folder names with .dev (or .anything) in their name.

Is this a common naming convention among wordpresss / backend developers? If so, can somebody point me to some additional reading / resources?

I haven't ever used that naming convention personally, it might just be something that Alena likes to do. I can see it's a nice way of reminding yourself that the folder is a development website.