It integrated the massive KB3125574 rollup , which contained years of fixes in one go.
In the spring of 2018, the world was moving on. Windows 10 was the new standard, and Microsoft had already announced that Windows 7 support would end in early 2020. But for many, Windows 7 was "old reliable"—the peak of operating system design. windows-7-all-in-one-may-2018
Unlike later "bloated" versions, the May 2018 builds were often praised for being lean, stable, and ready to work right out of the box without the telemetry and "nagware" that started appearing in late 2019. It integrated the massive KB3125574 rollup , which