Abstract
Assurance Engagements Standard (ISAE) 3000 entered into force on November 6, 2015. Its purpose is to regulate the assurance services other than independent audits and reviews and to guide assurance audit procedures. An assurance audit service involves an examination of gathered information, a decision, and a conclusion. It is performed by independent auditors or accounting professionals, for the use of decision makers or only the contracting parties. In this study, the importance of ISAE 3000, its rules, stages, content, and the procedures to be followed during an assurance engagement are discussed. A sample application of an implementation of ISAE 3000 is also included.