ISO Audits are required for ISO certification purposes. The ISO certification is required to prove the facility’s claim that they are managing their systems as per the mandate of the ISO Standards they wish to get certified. It is not only important to build a management system as per the requirements of the ISO standard but it is also important to show evidence that the management system developed is effectively implemented to fullest extent possible, to earn ISO certification.
ISO Auditors are expected to examine the evidence available, assess it to the requirements mandated in the ISO standards and make their report giving the extent of adherence to the requirements of the standard for which the system is being ISO audited, to recommend for ISO certification.
In other words, ISO audit is a means by which a facility gets its claim of adherence to the standard authenticated by an unbiased, independent, qualified, competent, external authority for ISO certification. This is to provide confidence to customers and rest of the world that the claims made by a facility are verified and certified that requirements of selected standards have been met.