A continuous task executes anytime a periodic or event-based task is not executing.

Continuous Task

In control systems and computing, a continuous task is one that runs continuously, processing and responding to input signals or data without interruption.

Periodic

Occurring or appearing at regular intervals of time.

Event-Based

Pertaining to systems, programming, or actions that are triggered or initiated by specific events or conditions rather than occurring in a continuous or time-based manner.