Starting with Windows 10 20H2, Microsoft permanently integrated the new Chromium-based Edge, making it almost impossible to remove. The July 2020 19H1 build still ships with the legacy Edge (EdgeHTML). If you prefer Firefox, Chrome, or any third-party browser, you can uninstall Edge completely via PowerShell without registry hacks.
Having an ISO that includes updates up to meant that technicians could install the OS without immediately having to download hundreds of megabytes of security patches via Windows Update. It saved time and bandwidth—a "slipstreamed" image that was current for its time. windows 10 x64 19h1 10in1 oem esd enus july 20 top
The text you provided is a specific release string typically used for (often found on file-sharing or enthusiast sites). Having an ISO that includes updates up to
. These builds typically bundle several versions of the operating system into a single, highly compressed file. Breakdown of the Title Starting with Windows 10 20H2
Having a 10in1 ISO means one USB drive can serve any client—from a student needing Education edition to a business deploying Enterprise.