Separation of duties

Separation of duties (SoD) (also known as "Segregation of duties") is the concept of having more than one person required to complete a task. In business the separation by sharing of more than one individual in one single task is an internal control intended to prevent fraud and error. The concept is alternatively called segregation of duties or, in the political realm, separation of powers. In democracies, the separation of legislation from administration shall serve for unbiased government. The concept is addressed in technical systems and in information technology equivalently and generally addressed as redundancy.