Customization refers to the process of modifying or adapting something to meet specific needs, preferences, or requirements. It can involve altering an existing product or service to better suit a particular user's individual tastes and preferences, or creating a completely new product or solution that is tailored specifically for that person or group. Customization allows individuals to have more control over the products and services they use, ensuring that they are getting exactly what they want and need. It can be applied in various fields such as technology, fashion, marketing, and even education.