A canto is used to organize long poems into sections, much like chapters in a book. The second canto of the poem introduces the main character's background.
Pro Tip 2/3
Not a Stanza
'Canto' is larger than a stanza and often contains multiple stanzas within it. The opening canto sets the stage with several stanzas describing the setting.
Pro Tip 3/3
Narrative Progression
Each canto can represent a shift in the narrative or a new stage in the story's development. In canto four, the hero finally embarks on his quest.