Companies usually have a human resources department to do the hiring, training and even firing of employees. But maintaining a full HR department is very costly. Doing the hiring itself is quite costly so the company would typically look for ways to limit costs and yet still be able to hire qualified personnel.
Fortunately for them, several employment testing software have already been developed. Using employment testing software would certainly cut the costs of hiring. With a single software, employment testing can be done many times over. Test results can also be available instantly so the hiring process is cut short as well. New employees will be able to get on board quickly and serve the company. This could mean the company would be able to go back to business as usual especially during times of unexpected job vacancies.
Employment testing software could administer aptitude tests, personality tests and employment skills test. In many cases, companies would hire a vendor to do the testing for them. This would take away a lot of work of the human resources department so the company would need fewer HR personnel. It’s also possible for the company to just acquire the software and run the testing themselves. This may still be cost efficient for them. It would give them more control over the testing process and they would be able to know and screen their applicants better.
The choice really is the preference of the company. The situation of every company may also be different so the most cost efficient option will always be the best choice for them.