There are many types of user testing, but here are three of the most common:

1. Usability Testing : This type of user testing focuses on evaluating the ease of use and effectiveness of a product or website. Participants are asked to perform specific tasks, such as navigating the site or using a particular feature and provide feedback on their experience. This type of testing helps to identify areas of confusion, frustration, or difficulty and provides valuable insights into how the product or site can be improved.
2. A/B Testing: This type of user testing involves showing two different versions of a product or website to separate groups of users and comparing the results. The goal of A/B testing is to determine which version of the product or site is more effective or provides a better user experience.
3. User Acceptance Testing (UAT) : This type of testing is typically conducted near the end of the development process to confirm that a product or website meets the requirements and expectations of the target audience. Participants are asked to perform specific tasks and provide feedback on the product, which can then be used to make any necessary improvements before launch.

These are just a few of the many types of user testing services that can be used to evaluate the user experience of a product or website. The specific type of testing that is used will depend on the goals of the testing and the specific needs of the product or website.

You can hire freelance user testing services to help you with each type of user testing at a more reasonable price since the services are now in high demand and offered worldwide by freelancers on various e-commerce platforms on the internet.