We are excited to launch Unified Settings for the AWS Console in the AWS GovCloud (US-West and US-East) Regions. With Unified Settings, settings will persist across devices, browsers, and services. At launch, Unified Settings supports default language, default Region, visual mode, and favorite service display. Default language displays your preferred language across the Management Console, default Region sets the AWS Region each time you sign in or visit a service console, visual mode lets you toggle between the default light mode or dark mode, and favorite service display will show services in the favorites bar with either the service icon and full name or only the service icon.
Source:: Amazon AWS