A domain name is a unique web address that identifies your website on the internet. Having a domain name is necessary for an online business as it establishes credibility, gives your business a professional image, and makes it easier for customers to find your website. It also allows you to create a brand for your business and have more control over your website and email.

You can link your customer application to your website so that your customers can order through the web as well. This feature can help improve your online presence and make it easier for your customers to find and order from your business. By having a domain name and linking it to your customer application, you can improve your business's visibility and increase sales.

You can follow the steps mentioned below to register for your Domain name:

1. Decide on a domain name: Choose a name that is relevant to your brand, easy to remember, and available. You can check if the name is available using a domain name search tool.
2. Choose a domain registrar: There are many domain registrars to choose from, including GoDaddy and Namecheap. Compare their pricing, features, and customer service before making a decision.
3. Check domain availability: Use the registrar's search tool to see if the domain name you want is available. If it is, proceed to the next step.
4. Choose a domain extension: There are many domain extensions to choose from, such as .com, .net, .org, and more. Choose the extension that best fits your business needs.
5. Provide your personal information: You'll need to provide your name, address, phone number, and email address to register your domain. This information will be used to create your account and register your domain.
6. Choose a registration length: You can choose to register your domain for one year, multiple years, or even up to ten years in some cases. Select the length of time that works best for you.
7. Add any additional features: Some registrars offer additional features such as domain privacy, which keeps your personal information private, or website hosting. Choose any additional features that you may need.
8. Enter payment information: Enter your payment information to complete the registration process. The cost of registering a domain name can vary depending on the registrar and the length of registration.
9. Verify your registration: Once you've completed the registration process, you'll receive a confirmation email from the registrar. Verify that all the information is correct and that your domain is active.

Congratulations, you have now registered your own domain name!