Does manual bring more ROI, or automation brings more ROI?

Factors that determine whether manual or automation testing generates higher ROI are the nature of the business, the particular activity, and the size of the business.

Automation can often result in greater returns on investment by eliminating errors, saving time, and boosting productivity. For instance, automating time-consuming operations like data input or testing can speed up work and cut down on mistakes. Here, automation testing is more effective and faster than manual testing, resulting in greater ROI.

However, manual testing may be preferable in some cases, such as when handling unique or complicated tasks that require human intervention or judgment. Automation might not be as effective or unable to handle the necessary complexity in such situations.