At the request of the plus workers, Microsoft erupted as the installer of the plus compiler.
Unlike the full studio, this installer has no obligation to put VS IDE Core and it does not include everything else that does not belong to the pluses (well, that is, to the C ++ compiler).

Through this, an attempt is made to reduce the weight of the installer and reduce the size and impact on Windows. If you really want to reduce the installer and you do not need Win10SDK, you can try to get the gig on 2.5 without shaking (and of course not installing) these large components (I did not do it myself ...):

Year / Release Date: 2017
Version: 15.4.0
Developer: Microsoft

Bit depth: 32bit
Language: English + Russian
Tabletka: not required
System requirements: Operating system:
Operating system:
Windows 10 version 1507 or higher: Home, Professional, for educational institutions and Corporate (release with long-term maintenance is not supported)
Windows Server 2016: Standard and Datacenter
Windows 8.1 (with update 2919355): Basic, Professional and Corporate
Windows Server 2012 R2 (with update 2919355): Essentials, Standard, Datacenter
Windows 7 SP1 (with the latest Windows updates): Home Enhanced, Professional, Enterprise, Maximum
Equipment:
Hard disk space: 1 GB to 10 GB, depending on the installed components.
Extras

Components-gluttons in size 2.5 Giga
671 Mb Win10SDK_10.0.10586.212, version = 10.0.10586.21217
662 Mb Win10SDK_Hidden_10.0.10240_2, version = 10.0.10240.117
412 Mb Win10SDK_10.0.14393.795, version = 10.0.14393.79517
353 Mb Win10SDK_10.0.16299.UWP, version = 10.0.16299.2
277 Mb Win10SDK_10.0.15063.UWP, version = 10.0.15063.25
139 Mb Microsoft.Windows.UniversalCRT.HeadersLibsSources.Msi, version = 10.0.26624.1

To install, you can disconnect from the Internet and start the installation of certificates with the command Certificates_Setup_v1.cmd or Certificates_Setup_v2.cmd
Then run VSCppCompiler_Setup0.cmd.

https://www.visualstudio.com/downloads/#build-tools-for-visual-studio-2017

www.visualstudio.com