What remained was a core kernel, the Aero interface, a stripped-down Explorer shell, and a network stack. The install.wim was . After installation, the OS footprint was 4.3GB on disk.
By removing resource-heavy features like certain Aero glass effects and telemetry, the UI feels snappier on older CPUs.
The specific dating of this edition—June 2019—is significant. By this time, Microsoft had officially ended mainstream support for Windows 7, with extended security support set to expire in January 2020. A "Super Slim" edition released at this time typically included integrated updates up to that specific month.