Hello All, I am working on a freelance testing project and I want to know which model is better for testing in the process and concept point of view between agile and waterfall. Yesterday when i search for difference between them I found this source and as I know waterfall all the development phases of the project are accomplished once and In this method, the test approach is rarely used but not an idea about agile. Can anyone know which model is useful in testing? and what technique agile model used?