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Spec - a detailed level design design of a change that is planned but focused on a single component. Has to be approved by impacted project Team. Just technical details, no resource allocation.
ONAP best practice - "codding coding standard" (may be code related, security related, configuration related etc.) recognized by the community that should be followed. Approved by TSC, has to be followed by any new code entering the tree. Enforced for a code arriving for a review after approval.
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