Premium processing is a service provided by USCIS on certain limited application types. To request premium processing, the petitioner must file Form I-907 and the required filing fee (along with the required fraud prevention fee, where applicable) to accompany the petition or application in question. USCIS typically faxes or emails decisions in premium processing cases to the parties on the case and/or their attorneys to expedite the process beyond regular postal mail. Read more at USCIS’s website about how to request premium processing.