What is the server?

Question

Why does it require?

Answer 1

what do you think where this apps database (including this question) is stored on? who sends your browser front end files? who gives response to your http request? where all your emails stored? where are your social media files stored? who serves you on internet? it's a SERVER

Answer 2

oh. I mean Server is a source of data such as email data, fb date and so on.