Software Testing Infographic

Most of the testing strategies depend on regression and functional testing. Applying functional and regression testing in an Agile and DevOps environment needs a strategic approach along with a well-defined plan of action in line with software testing.  https://dev.to/woodjessica/implementing-functional-regression-testing-in-agile-devops-m0d

Software regression testing should be performed and taken up as soon as the programmer adds new functionality to an application.  This is because of the dependency between the newly added and previous functionality that is critical for the software to function according to the requirements defined.