A feature is probably a "mini story" - a story can cover a whole range of different things that might be needed, but a feature is likely to be quite specific to something new. But there's plenty of space to make it fit what you need too.
I'd start with a look through https://www.atlassian.com/agile
Statuspage customers logged more than 194 years of collective incidents in 2018. That’s a whopping 87% increase from the 104 years logged in 2017 , and we aren’t even through December yet....
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