Internal auditing is an independent, objective assurance and consulting activity designed to add value and improve an organization's operations. It helps evaluate and improve risk management, control, and governance processes. Internal audits are important for monitoring business assets, verifying compliance with policies and procedures, and providing objective insight, improving efficiency, evaluating risks, assessing controls, and ensuring legal compliance. The main types of internal audits are compliance, environmental, information technology, operational, and performance audits. The internal audit process involves planning, fieldwork, reporting, and follow-up phases.