Understanding differences....

Missing hyphen: "User managed networking ...". That sentence is also verbose. Recommend removing fluff like "is a feature".
TS: I would just say: User-managed networking allows... DONE

Sentence fragment in lead-in sentence: "Examples include:" DONE

Typo: "VIP addressses" DONE

Validations

First sentence is fluff. Recommend removing it. DONE

Full term + abbreviation should appear first: "The MTU validation verifies the maximum transmission unit (MTU) value ..." Rewrite so that "maximum transmission unit" appears at the beginning of the sentence, not in the middle. DONE