Protocol
Protocol
A set of common rules that defines how computers exchange information with each other.
In Simple Terms
A protocol is a shared set of rules for passing data across a network. For example, HTTP is used when viewing websites, and SMTP is used when sending email. As long as both the sender and receiver follow the same rules, information can be exchanged correctly regardless of the device. The internet exists because devices around the world all follow these common rules.
Behind the Name
The word "Protocol" originally referred to diplomatic formalities or the official record of a meeting or conference. In the world of computing, it is used to mean the procedures and conventions that allow devices to communicate with each other smoothly.
Take a Closer Look!
A protocol is a shared set of rules that computers and software use to communicate over a network.
Even products from different manufacturers or different types of software can exchange data correctly as long as they agree on these rules in advance.
In broad terms, a protocol serves a role similar to a "language" that people speak.
There are many protocols in the world of the internet, each with its own distinct role. Different types are used depending on the purpose—some for viewing websites, some for sending files, and others for delivering email.
For example, HTTP is used for browsing websites and IP is used for identifying addresses, and these protocols work together to support the exchange of information.
Because these rules are standardized worldwide, we can use the internet regardless of our location or device. If protocols were fragmented, data could only be exchanged between devices from the same manufacturer.
Protocols serve as the invisible foundation of information that keeps the digital world running smoothly.