Automation Testing vs. Manual Testing: What’s the Difference?




Before we get into automation testing vs. manual testing, let’s define testing.

To begin, what exactly is testing? Testing is a method of evaluating a system to see if it meets the specified requirements.

Testing is critical to improving the quality of a software product or application since it carries out the process of identifying any gaps, flaws, or missing requirements that differ from the real requirements.

There are two forms of testing that software testing might use to meet its objectives. Automation testing and manual testing are these two types.

In the field of testing, understanding the differences between automation and manual testing is critical in determining the three Ws — or What, When, and Where — to use each.

So, while everyone has heard of the terms “automation testing” and “manual testing,” many do not understand how they function.

As a result, we’re going to dissect these terms in this article. Let’s have a look at the many sorts of testing. 

What Is Automation Testing?

Automation testing is the process of running test cases using tools, scripts, and software. It executes the features while also coding the code we’ve written. It allows us to run scenarios and distinguish between the real and expected outcomes.

Automated testing assists in the execution of hundreds or thousands of lines of code. It simplifies the process of conducting “repetitive” and “regression” testing to ensure that the program or application continues to function effectively when modifications are made.

Furthermore, this type of testing is performed by the computer, which checks thousands of scenarios or test cases in addition to supplying excellent software to its consumers by discovering defects in advance.

What Is Manual Testing?

The term’s meaning is implied by the name. “Manual testing” refers to testing that is carried out manually by humans. “Testers” are humans who undertake manual testing to confirm that software or an application is functioning properly or not by referring to the test cases given.

Manual testing does not require the use of a computer or coding; as a result, the tester must take an active role in the testing process. When a tester uses a multidimensional strategy, such as checking intricate situations, manual testing might result in high performance.

Furthermore, manual testing should be prioritized because it takes a lot of effort and time, but it eliminates errors and makes the product bug-free. This is one of the examinations in which no tools are required, but high-end skills are required.

criteria Automation testing Manual testing
Reliability and Accuracy

Because computer-based testing eliminates the possibility of error, automation testing is more precise and trustworthy.

Human errors can occur during manual testing. As a result, the test results are less likely to be reliable and accurate than if they were automated.
Time Performance

As software tools run the test cases or script, automation testing takes less time and may be done on a big scale.

On a broad scale, manual testing takes longer because it is done by hand.
Cost Optimization

Automation testing saves money since once the software tool is installed, it automatically runs tests.

Because the organization must pay experts to execute tests, the cost of manual testing is determined by the expert professionals.
Repetitive Cases

It is better suited to test cases that must be run frequently over a longer length of time.

When test cases are run once or twice, it is best. As a result, the test scenario is not repeated on a regular basis.
User Interface Testing

Because there is no human interposing/interference in user interface testing, it is ineffective.

Because it requires human interposing/interference, user interface testing is quite successful.
Programming Knowledge Automation testing necessitates coding knowledge. Manual testing does not necessitate coding skills.
When to Use Automation testing is ideally suited for regression, load, and performance testing. Manual testing is appropriate for exploratory testing, usability testing, and ad-hoc testing.


The bottom line is that testing is required for successful project completion. It is critical to choose which testing should be used and when based on the type of testing. Automation or a manual technique isn’t enough for testers. To get the best results, both automated and manual testing should be used correctly. The program or application would be more fruitful if the proper balance or strategy was chosen.


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