Scrum checklist - Henrik Kniberg's blog
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"The main target group for this checklist are teams that are relatively new to Scrum and likely to get many things wrong.
Each item is tagged by priority. I consider the priority 1 items to be pretty fundamental, I'd hesitate to even call it Scrum if a company hasn't implemented all those items (or at least has good reasons not to).
When helping companies implement Scrum I normally start by ensuring that all priority 1 items on the checklist are implemented (or intentionally skipped) before even considering priority 2 and priority 3."
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