Ever since 2016 with the Galaxy S7 duo and its Exynos 8890, Samsung has been using its in-house developed Mongoose CPU cores. It seems this will no longer be the case as Samsung is looking to shut its custom CPU department in Austin, Texas. The decision will result in the layover of around 300 employees and is expected to come in effect starting December 31. Samsung representatives confirmed the news and detailed that the decision was made in order to keep Exynos chipsets more competitive. According to speculation, Samsung will replace its in-house CPU cores with ARM ones instead....
Source: https://www.gsmarena.com/samsung_is_shutting_down_its_custom_cpu_core_department_will_license_arm_cores_instead-news-39940.php