Samsung has enterprise variants of some of its devices that get special treatment. They usually have some additional features to protect enterprise data and only software approved by the said company can be installed on the device. And more importantly, Samsung provides longer support compared to its consumer devices. Most of Samsung's business-oriented phones and tablets get 4 years of security updates from the date of release but the tech giant just announced that it's extending that period with another year for some of its enterprise devices. This includes the Galaxy S20, S20+, S20...
Source: https://www.gsmarena.com/samsung_ensures_five_years_of_security_patches_to_some_of_its_enterprise_devices-news-49843.php