Standard [[protocol]] is defined as:

A set of established and agreed-upon procedures or rules consistently followed in a specific context ensures uniformity, safety, and effectiveness.

Common contexts:
In medicine: A standard protocol outlines the step-by-step actions for diagnosis, treatment, or patient care (e.g., chemotherapy protocols).

In computing: It refers to a set of rules for data exchange between systems (e.g., HTTP, TCP/IP).

In research: A documented plan that ensures experiments or studies are reproducible and ethically sound.