Both manual and automated testing encompass a wide range of topics. Specific testing techniques, such as black box testing, white box testing, integration testing, system testing, performance testing, and load testing, are accessible within each category. Some of these techniques work well when automated, while others are better suited to human testing.

Even though manual testing works effectively in situations requiring immediate findings and analysis, it is ineffective in situations requiring several iterations and code execution. Additionally, it cannot match up when the size is large since it takes time and can result in unneeded delays in a technology field that moves quickly.

Automation testing tools enter the scene in this situation. A market leader and a poor rival may be determined by the capacity to perform iterative, parallel testing on various devices, browser iterations, and operating systems, with error logs and reports automatically created.

Let’s briefly discuss the value of automation and manual testing before moving on to the subject.

Automation Testing:

The technique of completing software testing tasks with little to no human contact to increase speed and efficiency is known as automation testing. Manual testing is not a substitute for automation testing. Test automation, like manual testing and QA outsourcing, focuses on continually identifying issues in the system.

A web or mobile automation approach automates the repetitive and functional parts of software testing. However, it doesn’t cover the entire process. Any sector that uses automation benefits from higher production and lower expenses. 

The need to test ever-increasing functionality due to subsequent development cycles makes it impractical to manually validate all conceivable combinations in terms of time and expense.

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The main benefits of automating tests over manual ones are cost-effectiveness, the ability to conduct testing on a wide scale, a quicker turnaround, and improved accuracy.

With these advantages, automation testing is most frequently chosen when testing needs to be done on a wide scale, the development cycle needs to be shortened, and one wants to run scripts continuously with a greater frequency of iterations.

Typical scenarios needing automated testing include the following:

☛ When several repeating tests must be performed:

The greatest choice for doing repeating tests is automation, especially if there is a high volume.

Regression tests, as an illustration, must be regularly performed to ensure that no new code has interfered with any current functionalities. Automation is the greatest solution for such a test because it doesn’t need as much manual oversight each time.

☛ When there are few available testers:

 If a project has a few committed testers, automation would be the best way to complete tests on time. 

Additionally, the testes might concentrate on issues that genuinely need their attention instead of being restricted to doing simple, repeated tasks. Another great technique to run many tests quickly without sacrificing the quality of the findings is parallel testing, which also involves automation. 

Manual Testing:

Without prior programming experience, a tester may test an application manually. The test engineer evaluates the software in manual testing to ensure it is stable or bug-free. 

Even though manual test engineers constantly look for flaws or problems in products before they are launched into the market, packaged software still includes flaws. 

Even while manual test engineers try their best, there is a risk that the finished software product will still have a flaw or fail to fulfill the customer’s requirements. Manual When the software must be tested using cognitive and behavioral skills, testing is successful. 

It mostly excels at testing:

  • Functionalities
  • User Experience (UI)
  • user encounter (UX)
  • Features for Website and App Behavior
  • Acceptance by users

An attentive and proactive QA automation tool is necessary to achieve the best outcomes in manual testing. When the tester uses a multifaceted approach and has a deeper grasp of the website and app’s technical and commercial use case parts, manual testing can produce excellent performance.

It works well in contexts where functional and business usability testing is necessary, such as exploratory testing, usability testing, and ad hoc testing.

Manual testing vs. automation: differences

The below-mentioned criteria perform a comparison between Automation testing vs. manual testing.

☛ Definition

Automation testing is testing a piece of software or an application with some tools. We will use automated testing whenever the application or program is undergoing several releases or multiple regression cycles. Test engineers carry out software testing called manual testing to examine an application’s functioning to client needs.

☛ Reliability

Automation testing validates an application’s functioning using tools and test scripts.

Manual testing is unreliable because it leaves room for human mistakes, which may result in the delivery of an application with bugs.

☛ Accuracy

The reduced accuracy of manual testing results from the greater likelihood of a human mistake.

Because computer-based testing eliminates the possibility of mistakes, automation testing shows greater accuracy.

☛ Framework

The automation test engineer may speed up the automation process using several frameworks, such as data-driven, hybrid, modular, and keyword-driven. When utilizing manual testing, a framework is not required.

☛ Turnaround time

The cycle of testing for manual testing takes longer to complete, increasing the turnaround time.

Testing automation drastically cuts down on turnaround time, allowing for record-breaking testing cycle completion.

☛ Compatibility of operating systems

Automation testing may also be carried out on diverse systems running various operating systems and programming languages. Manual verification for Operating system compatibility is impossible due to several testers’ need to complete these tasks.

☛ Regression testing

Automated test engineers carry out regression testing whenever code changes arise as a result of release enhancements. Because requirements often change throughout manual testing, it’s possible that when the test engineer runs the test case for the first time, it won’t identify regression errors.

☛ User Testing

Because manual testing needs human observation and cognitive skills, it guarantees a high-end user experience for the software’s final user. The machine lacks human observational and cognitive capacities, so automation testing cannot provide a positive user experience.

☛ Cost-effective

Since paying experienced people to do manual testing adds to the expense. Automation Testing reduces expenses since once the software infrastructure is put in place, it functions effectively for a long time. 

Can automation replace manual testing?

The answer is no, of course. Automation testing is more accurate for algorithm-based test cases, but it falls short when assessing usability, functionality, aesthetics, user experience, or behavior. 

It’s because automation, despite its intelligence, lacks cognitive skills and cannot display decision-making intelligence comparable to that of a person. In this area, manual testing triumphs over automation.

To reproduce and address errors found by QA consulting services, developers employ manual testing. Product managers, like developers, examine minor alterations to websites and applications using manual testing. Here are a few examples that demonstrate that automated testing cannot take the place of manual testing.

☛ When flexibility is necessary:

QAs may test rapidly and get results right away using manual tests. Automation testing involves more time and effort to set up and maintain. Therefore, executing manual tests gives the pipeline additional flexibility. 

Testers can do a manual test if they are immediately aware of a specific situation to test. However, if tests are performed frequently with different inputs and values, automation will be necessary for the best results.

☛ Short-term projects:

Since automation demands greater preparation and effort, it isn’t wise to put them up for a project that lasts only a few days and concentrates on tiny features or very little code. The time and money required to develop the test infrastructure would be excessive for such a limited scope.

When testing software for end users, automation is helpful since it can determine whether the product is pleasing to the eye and feels natural to use. Without true human testing, who can utilize their sensitivities to make the essential judgments, no computer can determine whether a website or app gives an acceptable user trip.


In the vast field of testing, manual testing still has equal weight to automation. There are several testing kinds for which we must pick manual testing since the automation solution is ineffective. 

Tool scripts are manually created. The tool is manually created; although it doesn’t need human interaction, it does need instruction from a person.

The restriction of any machine or program is that it can only perform the tasks that are specified for it. Although automation solutions now have several drawbacks, they will ultimately develop and improve. 

You must consider the project’s requirements, time restraints, and, most importantly, budget when comparing the benefits and drawbacks of human versus automated testing. Finally, manual testing is an option when competent testers are needed, and automation is an option when the test case needs to be automated.


Since manual testing takes more time, it will perform much more quickly by automating the process. While doing the same processes repeatedly eliminates human mistakes. After frequently doing the same activities, we can test the application to see how it responds.

Automated testing may appear frightening when you start using it, but it requires time and patience to become proficient. Additionally, remember that there is always more to learn as an automation engineer, so take solace in that even the best isn’t always right.

Complex test cases are handled by manual testing, whereas straightforward, repeated tests are handled by automated testing. Therefore, manual testing is still crucial. However, implementing automation testing increases the effectiveness of your manual tests.