The document discusses the need for audit data standards to facilitate interoperability between accounting and audit software. It notes that currently, heterogeneity in client data formats makes audit automation challenging. Audit data standards like ADS and ISO 21378 aim to standardize data elements and definitions to allow automated extraction and analysis of audit evidence across different systems. The document outlines several audit data standards and explains how they promote efficiency and effectiveness by reducing data integration issues faced by auditors. Overall, audit data standards are necessary to realize the full potential of technologies like audit data analytics in the digital transformation of auditing.