Karan Pagare, a Full Stack Engineer, offers a detailed guide on QED42's blog, published on February 19, 2024, for upgrading older Drupal versions to Drupal 10, emphasizing the necessity due to the end of support for previous versions. The article outlines steps for updating, including identifying compatibility issues, making themes and modules compatible, and resolving Composer dependencies. Pagare also addresses common challenges and solutions, aiding users in navigating the complexities of the upgrade process to ensure website security and functionality.