Everyone has high expectations for speed and quality. Constantly, software developers face the difficult choice of prioritizing speed of delivery above the quality of the release, but this trade-off is seldom black and white. End-to-end testing and regression testing are two testing methods that have been in the spotlight lately.


Both end-to-end testing and regression testing have their benefits and drawbacks, and these are where they most closely resemble one another. But are they the same thing?


What is End to End testing?

During the software development lifecycle (SDLC), end-to-end testing is performed to ensure that the final product functions as intended and performs as expected when put through realistic scenarios. The objective is to recreate a realistic user experience from beginning to end.


What are the benefits of it?

Because current applications are so complex, with many interdependent internal and external subsystems, software products nowadays must be verified as a whole, not merely in isolation; even if each component passes testing independently, the overall program may be flawed. To ensure your software is ready for production, you should do end-to-end testing.


Regression testing assures the continued operation of business processes in the face of fast software changes. In addition, because automated test cases reduce execution time, the testing team can concentrate on covering more aspects of the program. End-to-end testing is complicated since it requires modeling essential user interactions, the whole software stack, and its dependencies. In light of this, E2E testing may need substantial attention and debugging.


Performing end-to-end testing ensures that your program is fully functional from start to finish, across all platforms, and as an integrated whole. Simultaneously, it offers insight into application performance in various end-user situations to guarantee that the final product is as expected. To further assure quality and prevent risk, end-to-end testing considers the interplay between services and subsystems, expanding test coverage beyond what is often covered in more isolated testing approaches.


In a contemporary Agile or DevOps setting, end-to-end testing is often conducted every iteration or every few iterations, allowing for quicker mistake detection and resolution. This decreases the likelihood that faults will get deeply embedded in the product, which would be challenging to track down and correct. End-to-end testing reduces the time and money spent on testing since each iteration of the process is thoroughly tested and because fewer bugs and breakdowns make it into the final output.


What is regression testing?

Regression testing takes previous test cases and reruns them to ensure that the program continues to operate as expected and that the implementation of any new features has not resulted in any unexpected issues. Regression tests can be run on a subset or all of the current test cases, depending on the nature of the modification.


What are the benefits of it?

It takes much time and work to test the entire software. On the other hand, regression testing runs the chosen scenarios to guarantee that all features perform as expected. It is also possible to alter the data inputs or devices used in each iteration. After modifying their software, businesses may use regression testing to determine whether bugs are currently creating issues for their applications. The application’s code may be readily modified or replaced by the appropriate value by engineers.


While continually improving the application, regression testing guarantees system stability. It repeats the same actions, allowing the team to produce high-quality software in less time. Companies may save money by eliminating or drastically reducing the need for humans in the regression testing process. Furthermore, resources are freed up to be applied to higher-priority endeavors.


Maintaining cutting-edge technology is made easier with the aid of regression testing. Regression testing allows the company to locate the issue areas and replace them with suitable software to improve the app’s processing and provide effective solutions. It’s also a reliable method of preserving software in a state where it may be used again and again. Since all the testing is handled by automated software, this method produces a high return on investment quickly.


What is the difference between these tests?

But the list of differences between regression testing and end-to-end testing is longer.


With a fast regression testing procedure, product teams will get more insightful feedback and react immediately. Regression testing uncovers new issues early in the deployment cycle. End-to-end testing evaluates the functionality and performance of a business process and primarily identifies faults, dependencies, and integration concerns.


Regression testing requires significant time and effort to cover the complete program. On the other hand, end-to-end testing enhances test coverage beyond what is often considered by more isolated testing approaches to verify quality further and reduce risk.


The Regression tests are executed immediately after a code update or release. In contrast, end-to-end testing is performed continually throughout the SDLC.


The aim of regression testing is to ensure that what worked yesterday continues to function today, notwithstanding any modifications that may have been made. End-to-end testing aims to recreate a real-world user situation from beginning to end. This testing is intended to verify the system being evaluated and guarantee that its subsystems function and act as predicted.



Although each of these examinations has advantages and disadvantages, you are not required to select just one. Instead, determine how much end-to-end testing is needed, how much of that testing should be regression testing, and how much testing should be for new features. A superior testing platform with current automation technologies may significantly contribute to the success of an organization. HeadSpin is one such platform built with cutting-edge technology. Find the bugs and fix them through regression testing using AI-based testing insights. To maintain the process, automate testing from beginning to finish.


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