TestNG is a testing framework developed in the lines of JUnit and NUnit, however it introduces some new functionalities that make it more powerful and easier to use. 

TestNG is designed to cover all categories of tests: unit, functional, end-to-end, integration, etc., and it requires JDK 5 or higher. 

This tutorial provides a good understanding on TestNG framework needed to test an enterprise-level application to deliver it with robustness and reliability. 

Audience 

This tutorial is designed for software professionals interested in learning the features of TestNG Framework in simple and easy steps and implement it in practice. 

Prerequisites 

Before proceeding with this tutorial, you should have a basic understanding of Java programming language, text editor, and execution of programs, etc. As you are going to use TestNG to handle all levels of Java project testing, it will be helpful if you have a prior knowledge of software development and software testing processes.