Meet Guillermo Ulises Lo Coco, MongoDB University's 1 Millionth Registrant, who signed up for the MongoDB University courses M001: MongoDB Basics and M040: New Features and Tools in MongoDB 4.0 to advance his skills in programming after a four-year hiatus. He currently works at Club Deportivo Tenerife, where he redesigns old database applications to improve public web areas and focuses on future-proofing his apps. Guillermo discovered MongoDB through NodeJs and found it the most complete technology for his needs, thanks to its ease of design, prototyping, and deployment. In the past year, he developed new apps for annual subscription renewal and an appointment management system for the Tenerife Soccer team, using geospatial indexing in a MongoDB University course. He advises others to think about real-life database problems and consider how their data will grow when enrolling in a MongoDB University course, which provided him with the opportunity to update his database skills and quickly build applications.