QA includes activities that ensure the implementation of processes, procedures and standards in context to verification of developed software and intended requirements. QA Focuses on processes and procedures rather than conducting actual testing on the system.QA is  subset of Software Test Life Cycle (STLC). Testing includes activities that ensure the identification of bugs/error/defects in a software. Testing Focuses on actual testing by executing the software with an aim to identify bug/defect through implementation of procedures and process.

Testing has evolved from end-of-life to mainstream activity. Based on recent research, analysts predict that the QA, have higher expectations about business assurance of applications and products with emphasis on reliability, high resilience, and predictability. With the ubiquity of apps, there is an increased focus on availability of systems, user experience, security, and the need for a business assurance partner.

Debugging − It involves identifying, isolating, and fixing the problems/bugs. Developers who code the software conduct debugging upon encountering an error in the code. Debugging is a part of White Box Testing or Unit Testing. Debugging can be performed in the development phase while conducting Unit Testing or in phases while fixing the reported bug. AS digital transformation gains momentum, the need for speed-to-market is felt severely by both business and IT.