miji.beA server is a computer that responds to requests from other computers by providing data or services. Imagine a restaurant kitchen - customers (browsers) place orders (requests), and the kitchen (server) prepares and delivers the food (data). Without servers, there would be no websites to visit, no emails to send, and no online services to use.
Servers come in several specialized types. Web servers deliver HTML pages, images, and other files that make up websites. Mail servers handle the sending and receiving of email messages. DNS servers translate human-readable domain names (like google.com) into IP addresses, functioning as the internet's phone book. Database servers store and retrieve large volumes of structured data.
Physical servers are specialized hardware designed for reliability. Unlike home computers, servers are built to run 24 hours a day, 365 days a year. They feature redundant power supplies, advanced cooling systems, and error-correcting memory. Large organizations house their servers in data centers - purpose-built facilities with strict security, climate control, and backup power generators.
Services like AWS, Google Cloud, and Microsoft Azure let anyone rent server capacity over the internet without owning physical hardware. You can use as much as you need, when you need it, and pay only for what you use.
URL shortening services run on servers. When you click a short URL, your browser sends a request to the shortening service's server. The server looks up the original URL in its database and returns a redirect response, telling your browser where to go next.