Continuous assurance is an approach to compliance and control monitoring that replaces periodic, sample-based testing with always-on, automated monitoring of control effectiveness. Instead of testing controls once or twice a year and assembling evidence manually before audits, continuous assurance generates evidence from live systems as controls operate — providing real-time visibility into whether controls are working, where gaps are forming, and what needs attention before it becomes an audit finding or regulatory incident.

Continuous monitoring refers to the automated collection of control performance data — detecting exceptions, logging evidence, and triggering alerts when controls deviate from expected behaviour. Continuous assurance is the broader discipline that includes monitoring but extends to interpretation, reporting, and governance. Monitoring produces data. Assurance produces confidence — connecting that data to board reporting, audit committee oversight, and regulatory submissions so that the people who carry governance accountability can see control health in real time, not in retrospective summaries.

Periodic testing was designed for a regulatory era with fewer obligations, lower scrutiny, and longer audit cycles. Today, regulators like APRA (through CPS 234), ASIC, and international standards bodies increasingly expect evidence of ongoing control effectiveness across the full observation period — not point-in-time snapshots reconstructed before an audit. SOC 2 Type II audits, ISO 27001 surveillance audits, and APRA prudential reviews all require demonstration that controls operated effectively throughout the period, not just at the moment they were tested.

Most controls that operate in digital environments can be monitored continuously — including access controls, change management controls, data privacy controls, transaction monitoring controls, security event controls, and regulatory reporting controls. Controls that involve physical processes or human judgment (such as safety inspections or management approvals) can be monitored through exception-based alerting and evidence capture at the point of execution. The key determination is whether the control carries sufficient risk to justify continuous monitoring over periodic testing — not every control warrants automation.

In traditional compliance models, audit preparation typically involves weeks of manual evidence collection — pulling logs, compiling spreadsheets, chasing control owners for attestations, and repackaging evidence for auditor review. Continuous assurance eliminates this cycle by generating audit-ready evidence as a byproduct of ongoing operations. When controls are monitored continuously and evidence is captured, timestamped, and stored at the point of execution, audit preparation becomes a matter of reporting access rather than evidence reconstruction. Organisations implementing continuous assurance commonly report audit preparation reductions of 60–80%.

CPS 234 is APRA's prudential standard on information security, requiring APRA-regulated entities to maintain information security capabilities commensurate with the threats to their information assets. CPS 234 specifically requires entities to test control effectiveness through a systematic testing programme and to notify APRA of material information security incidents. Continuous monitoring of information security controls directly supports CPS 234 compliance by providing ongoing evidence of control effectiveness, detecting control failures in real time, and enabling timely incident identification and reporting.