Microsoft has revealed a number of changes to Windows Update for business. The main change is the retirement of the Semi-Annual Channel (Targeted) (SAC-T). Starting in Windows 10, version 1903 (the next feature update for Windows 10), its release information page will no longer list SAC-T information for version 1903 and future feature updates.
A number of users are interested in delaying the upgrade to the next Windows 10 feature update when it becomes available. There are many reasons for this. Most users don't want to disturb their existing setup and do not want their custom settings getting reset again by the new OS version. Here is the official way to defer upgrades in Windows 10.