An "End User" refers to the individual or group that ultimately uses a product or service. In the context of technology, this often means the person who interacts with software or hardware after it has been developed and released. End users are crucial in determining the success of a product, as their feedback can influence future updates and improvements. Understanding the needs and preferences of end users is essential for companies like software developers and manufacturers. By focusing on the end user's experience, businesses can create more effective and user-friendly products, leading to higher satisfaction and loyalty.