![]() If the user cannot browse through the system easily, the user might lose interest in the application and it will, in turn, affect customer satisfaction. It is required to see how quickly or effortlessly the user is able to learn and run through the system. Usability testing checks how easily a user can use the system. In recent years, Yahoo’s user accounts were hacked at least thrice which was also responsible for Yahoo’s decreased valuation during its buyout by Verizon Communications. It was responsible for stolen data (such as names, date of births, passwords) of 500 million user accounts. One of the many examples of why security testing is the utmost requirement is Yahoo’s cyber attack in 2014. It makes sure that only authorized and authenticated users are allowed to access the software, and users’ data is secured and available to them whenever required. In this type of testing, the system’s readiness to fight back against any external or internal attacks is tested. Security testing is one of the most crucial testing types of non-functional testing. Such scenarios are very rare, but it still affects the application’s performance and most importantly, end-user satisfaction. Now, let’s take a real-life example of why performance testing is important: When American actress Jennifer Aniston debuted on Instagram in 2019, due to a large number of users accessing her profile, Instagram was crashed temporarily. It is important to note that load testing, stress testing and volume testing are basically part of performance testing. It will also check for any data loss and slowness in response. ![]() After increasing the database size, multiple queries can be fired simultaneously to check how effectively system is able to exchange the data.
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