What is the main benefit of the Test Pyramid?

The Test Pyramid is a model for organizing tests in a way to make the process of testing faster, efficient and cost-effective. This model focusses on getting maximum functional testing getting covered by faster and less brittle tests like Unit and API tests1. The main benefit of the Test Pyramid is that it helps in evaluating the amount of test cases needed for each level of testing. The Test Pyramid suggests that the number of test cases should decrease as we move up the pyramid, from unit tests to integration tests to end-to-end tests. This is because unit tests are more granular, isolated, and easy to write and maintain, while end-to-end tests are more complex, dependent, and brittle. The Test Pyramid also helps in balancing the test coverage and the test execution time, as unit tests provide high coverage and low execution time, while end-to-end tests provide low coverage and high execution time. By following the Test Pyramid, teams can optimize their testing efforts and resources, and ensure that they have a sufficient and effective test suite for their software. References: ISTQB® Foundation Level Agile Tester Syllabus, Section 2.2.1, page 16; ASTQB Agile Tester Certification Resources, Section 2.2.1, page 16; What is Test Pyramid : Getting started with Test Automation Pyramid, The Practical Test Pyramid - Martin Fowler, Testing Pyramid: What Is It and How To Use It | Solvd.