JPG: Used for print and digital mediums (websites, presentation tools, collateral etc). Solid white background behind logo.
PNG: Used for print and digital mediums (websites, presentation tools, collateral etc). Ideal for when you need a logo with a transparent background.
EPS: Used for printed collateral produced by professional design programs (Adobe InDesign, Illustrator etc). Can be scaled to any size without sacrificing quality. Often referred to as “vector” format.