What is the difference between a primary and secondary audience in reading?

Answer 1

Primary audience is the person actually addressed in the document and the Secondary audience is some one other than the intended receiver who will also read the document.

Answer 2

The primary audience refers to the main group of individuals for whom a piece of writing is intended, while the secondary audience includes additional or unintended readers who may come across the material. The primary audience is the central focus of the message, while the secondary audience receives it indirectly.