UDP – Definition & Application

The main topic of our article is UDP. We will dive deep into its goal and how it works, as well as its main advantages¬† So, if you’re enthusiastic, let’s start!

UDP Meaning

The User Datagram Protocol (UDP) is one of the oldest network protocols, having been developed in 1980. It is the main alternative to TCP and is a basic OSI transport layer protocol for client/server network applications based on Internet Protocol (IP).

Applications use the User Datagram Protocol (UDP) to deliver a faster flow of information by eliminating error checking. You may need to understand the distinction when configuring network hardware or software.

The way it works

The UDP protocol is comparable to TCP, however, it does not include any error checking. All of the backward communication adds latency to the process, slowing it down.

Packets are sent to the recipient when an application uses UDP. The transmitter does not wait for the receiver to acknowledge receipt of the packet; instead, it continues sending packets. If a few UDP packets are missed by the receiver, they are simply lost; the sender will not resend them. If all of this is lost, gadgets will be able to interact more quickly.

Assume you’re watching a live stream that is occasionally broadcast using UDP rather than TCP. The server merely broadcasts a continuous stream of User Datagram Protocol packets to the PCs on the receiving end. If your connection is lost for a few seconds, the video may freeze or jump for a few seconds before returning to the current bit of the broadcast. If a slight packet loss happens, the video or audio may become distorted for a brief period of time until the video resumes without the missing data.

UDP applications

UDP is a very basic and quick protocol. However, these aren’t his sole benefits. Here are the rest of them:

  • It’s appropriate for the Domain Name System (DNS) since DNS queries and responses can all be sent on a single IP datagram, and DNS must also react rapidly to requests.
  • UDP is an ideal choice for communication applications such as voice-over-IP or real-time, as well as online gaming. In fact, any application or process that can withstand datagram loss can use UDP. On the other hand, the decision is based on what is more important to you: swift speed or precision.
  • If you need to broadcast data, the User Datagram Protocol supports multicast.


To summarize, UDP is a messaging protocol that enables networks and devices to communicate quickly and effectively. It’s possible that this is the best solution for you. When it is more or less appropriate, it is determined by your wants and needs, as well as the network’s requirements.