Internal controls are important to reduce fraud and risk in an entity. We as auditors can assist with designing internal controls to enhance productivity and reduce risk and fraud in the entity. 

The objective of an agreed-upon procedures engagement is for the auditor to carry out procedures of an audit nature to which the auditor and the entity and any appropriate third parties have agreed and to report on factual findings.Auditor only provides a report of the factual findings.

The purpose of an audit is to enhance the degree of confidence of intended users in the financial statements. This is achieved by the expression of an opinion by the auditor on whether the financial statements are prepared, in all material respects, in accordance with an applicable financial reporting framework.

Due Diligence is the process of investigating and auditing a prospective business decision by gathering information about the financial, legal, and other material (important) status of an entity and the issue of a report on findings.

The scope of an independent review engagement is less than that of an audit, and therefore the level of assurance provided is lower.