I am writing a technical report on a topic which includes a Virtual Private Network. These are commonly abbreviated as VPN.
However it feels strange writing something along the lines of
VPNs are often employed to ...
On the other hand a formulation such as
VPN networks are often employed to ...
is a pure tautology, as it basically means Virtual Private Networks Networks.
As for actually writing
Virtual Private Networks are often employed to ...
Although this works and is surely correct, it will fill my text with a lot of useless clutter, I can't possibly write out the abbreviation more than once or twice per paragraph.