It refers to the perspective from which a story is told or narrated. This can be identified by the pronoun that the narrator uses to recount events.
FIRST-PERSON POV - The narrator or storyteller is a character in the story who uses the pronoun "I" or "we."
The narrator tells a story from their own perspective.
SECOND-PERSON POV - It uses the second person pronoun "you." The second person may be a specific fictional character, the reader of the story or the narrator himself or herself.
THIRD-PERSON LIMITED POV - The narrator describes only events from the perspective and understanding at one or sometimes, a select few characters. They do not see everything; hence, they only tell what the character sees, thinks, and feels.
THIRD-PERSONOMNICIENT - The narrator knows the motive, feelings, and background of any or more than one character. All Knowing POV.