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Manual vs Automation Testing | Key Differences, Pros, Cons

This article stresses the Manual vs Automation Testing comparison and their basic definitions, as both are directly correlated to the testing routines.

Before we start the showoff of manual vs automation testing, let’s go in a quick recap of the two testing techniques:

What is Manual Testing?

The term "manual testing" describes the procedure of manually assessing and validating software systems or applications without the aid of automated testing tools or scripts. To find flaws, faults, or other anomalies in the behavior of the software, human testers execute test cases and carry out various operations on it.


By following established test scenarios and test cases, testers recreate end-user interactions with the product during manual testing. They investigate the application's various features, capabilities, and workflows to make sure it satisfies the requirements and performs as intended.

What is Automated Testing?

Automated testing is the process of running tests, confirming software functionality, and contrasting the findings with what was anticipated using software tools and scripts. To find flaws, faults, or departures from intended behavior, entails creating and executing automated test scripts that replicate user interactions, input data, and system replies.


Testers who specialize in automated testing write test scripts utilizing tools or frameworks that can automate the execution of test cases. These scripts often include a list of directives or instructions that specify the test procedures, desired outcomes, and any required test data. These scripts are then carried out by the automated testing tools, which also interact with the tested software and provide test logs or reports.

Manual vs Automation Testing

Both can be compared in different ways which impact the test results during a typical software testing routine:

1. Costs:

Initial setup expenses are relatively lower because most experienced testers are needed in manual testing, while automated testing has higher initial setup costs due to the requirement for automation tools and qualified personnel.

2. Testing Approach:

Manual testing entails the execution of test cases by testers while mimicking user interactions and watching the performance of the software. Testing that is automated involves the use of automation tools and scripts to run tests without the need for direct human input.

3. Test Operation:

Manual tests are carried out step-by-step by testers who manually enter data and validate outcomes. With little to no human involvement, tests are run by automation tools utilizing pre-written scripts or test cases.

4. Coverage of Tests:

Coverage is based on the tester's experience, the amount of time available, and the quantity of manually carried-out test cases. Because scripts may be written to cover a variety of situations and edge cases, automation increases test coverage.

5. Efficiency and quickness:

Testing in manual mode can be time-consuming, particularly when doing repetitive or regression tests. Automated testing saves time and effort because it can be carried out rapidly and repeatedly.

6. Accuracy:

Subjective to human mistakes, including forgetfulness, improper execution of test cases, and erroneous interpretation of results when it comes to manual tests. On the other hand, automated testing reduces human errors by ensuring that test cases are executed precisely.

7. User Experience and Usability

Through subjective analysis, manual testers can assess usability elements, intuitiveness, and user experience. While in automated testing, is limited in its capacity to assess usability or subjective user experience and is mostly focused on functional features.

8. Adaptability and Flexibility:

Since testers can easily alter or develop new test cases, manual tests are better able to respond to changing needs in manual tests while in automated testing, when one needs change, automation scripts may need to be updated, which limits their adaptability and flexibility.

9. Initial Testing

Manual Testing involves early feedback and bug discovery is made possible by the early initiation of manual testing, even before the product is completely functional. Automated testing is challenging to implement early in the development cycle since it needs a reliable software build.

10. Upkeep Required:

Once test cases are established, minimal upkeep is necessary, though modifications may be needed for requirements that have changed in manual tests. While in automated testing, one requires constant upkeep to keep scripts current as software changes.

Manual or automated, this most of the time depends on the organization's work style but if one is looking for reliable automated testing, then WeTest shines with its industry-standard Automated Testing services where one will get superior integration with the most popular CI/CD tools and best analysis tools.

Wrapping Up: 

When it comes to the breakdown of Manual vs automation testing, both have advantages and disadvantages. Organizations frequently combine the two methods, using manual testing for exploratory, usability, and subjective assessments and automated testing for repetitive jobs, regression testing, and attaining wider coverage. Depending on project needs, time restraints, budget, and the complexity of the program being tested, one may choose between manual and automated testing.

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