Information Systems Auditing, Chapter 1: "The Demand for Audit and Other Assurance Services"

Auditing

(1.1) The accumulation and evaluation of evidence about information to determine and report on the degree of correspondence between the information and established criteria.

Accounting

(1.2) The recording, classifying, and summarizing of economic events in a logical manner for the purpose of providing financial information for decision-making.

Information Risk

(1.3) A form of risk that reflects the possibility that the information upon which the business risk decision was made was inaccurate.

Assurance Service

(1.5) An independent professional service that improves the quality of information for decision-makers.

Attestation Service

(1.5) A type of assurance service in which the CPA firm issues a report about a subject matter or assertion that is made by another party.

Other Assurance Service

(13.5) An assurance service that does not meet the definition of an attestation service.

Nonassurance Service

(13.5) Services rendered by CPA firms that generally fall outside the scope of assurance services.