Instead of using an in-house trained group of testers, random people are picked to test the site. This method is considered very effective in the early stage of designing a website.
This method of testing involves people who are located in several countries and time zones. This usability testing method is considered a good method since the test is carried out in the users own environment rather than a controlled facility. This method simulates real-life users using the site.
From the name itself, evaluation of the site is done by Experts who are well experienced in testing the usability of the website.
Provides usability testing using a program that checks good design and heuristics. Automated expert tests are typically not as detailed as other types of usability tests, but they can be finished more quickly and consistently.