The most common developer skill gaps impacting businesses are aggregation, indexing and optimization, and security. These skills are critical for modern data platforms like MongoDB, but many developers lack the necessary knowledge to create efficient queries, manage database performance, and ensure data security. To address these gaps, organizations can use tools like MongoDB Skill Scanner to identify areas of improvement and provide targeted training programs, such as Instructor-Led Training, to equip developers with the skills they need to succeed. By closing these skill gaps, businesses can improve productivity, reduce errors and inefficiencies, and enhance their overall user experience.