16,000 Internet users from around the world have taken part in the recently concluded online course on in-memory data management by Prof. Plattner on openHPI.de, HPI’s interactive educational platform. We enjoyed vivid discussions with more than 4,800 users who actively participated in the homework or discussion forums. 2,400 participants received a certificate, thereby confirming their successful completion of the course. Congratulations to all successful learners!