How is decided, if a software version is called 1.1 / 1.0.1 / 1.0.0.1 / 1.0.0.0.1 etc.?
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Anyone can come up with their own system at any time, as others have mentioned
The standard is:
First number: major revision. This would be increased if the whole software was rewritten almost from scratch, or the way it works for users was completely redone, that sort of thing
Second number: minor revision. This would be for a feature update, adding something new or changing the way a subset of the software works
Third number: patch. This would be for a bug fix or some other kind of tweak
Fourth number (if exists): build. Usually not involved in public releases, it’s basically the amount of compilations done while working on the current version. But if the public sees a fourth number, like if the last patch didn’t work right and they had to rush out a fix, they might use the build number or replace it with just a .1 or .2
But again, almost every company does something different from this because it’s just an ideal
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