Auditing is the process of evaluation of the quality and consistency of a service or product. Auditing indirectly gives the judgment regarding the efficiency of a system based on the evaluation process. Showcasing the errors and pitfalls in process management will help to improve the performance in future. Earlier, auditing was confined to the field of finance only and was known as financial audit. Now it is an essential part of every business. Auditing includes internal auditing and external auditing. Internal auditors work inside the firm while the external auditors work for the organization from outside. There was a time when most of the auditing work was done manually, but now it is simplified with the help of computers.