Poetic devices or techniques are the tools a poet uses to construct their poem and make it engaging for readers. 

These devices can be roughly divided into three categories:

STRUCTURE: The way that the words are arranged.

FIGURATIVE LANGUAGE & IMAGERY: The way that words create vivid images in our mind.

SOUND DEVICES: The way that words sound to make meaning.

Have a look at the infographic below to see what device falls under each category...