Audits help organisations check whether their systems work properly and meet agreed rules or standards. Auditors do not blame people. Instead, audits offer a practical way to understand what is going well, what needs improvement, and where risks might exist. Organisations commonly use three audit approaches: first-party audits, supplier (second-party) audits, and combined audits.

First-Party Audits

A first-party audit occurs when an organisation reviews its own systems and ways of working. You might think of this as a health check. Staff within the organisation, or people acting on its behalf, review policies, processes, and records to ensure they follow established procedures. For example, a company may assess how it protects information, trains staff, or manages system access. First-party audits help organisations spot problems early, before they become serious, and support ongoing improvement. They also give managers confidence that the organisation operates as intended.

Supplier (Second-Party) Audits

A supplier audit, also called a second-party audit, assesses how a supplier or partner operates. Many organisations depend on others for services such as IT support, manufacturing, or data handling. If a supplier makes a mistake, it can still affect the organisation using them. A supplier audit allows the organisation to confirm that suppliers meet agreed requirements, such as security controls or quality checks. This process helps reduce risk and ensures everyone meets the same expectations.

Combined Audits

Organisations use a combined audit when two or more standards or systems need to be reviewed simultaneously. For example, an organisation may want to check both information security and business continuity together. Instead of running two separate audits, a combined audit examines shared processes in a single, structured review. This approach saves time, reduces repetition, and provides a clearer overall picture of how the organisation operates. Combined audits still follow the same audit principles, such as fairness and evidence-based findings.

Common Audit Principles

All these audit approaches follow common rules. Auditors should plan each audit, remain objective, and base their findings on evidence such as documents, interviews, and observations. They must be fair, independent, and handle information carefully. Auditors report facts clearly, not opinions. This helps organisations trust the results and act on them.

Why Audits Matter

Audits are important because they support learning and improvement. First-party audits help organisations better understand themselves. Supplier audits build trust and reduce surprises when working with others. Combined audits make reviews more efficient and easier to manage. Together, these approaches help organisations stay organised, meet requirements, and improve how they work over time.

Summary

In simple terms, audits are like structured check-ups. Whether checking your own organisation, your suppliers, or several systems at once, the aim is always the same: to understand how things are working and to make them better.