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Cloud Services Inventories
CMDBs
IT Applications Inventories
Third Parties Inventories
Formula
Let X be the set of known application instances.
Let e be the entity.
Let R be a set of responsibilities assigned to e.
Let s(X, e, R) = Y be defined as the function that returns Y, a subset of X where for each application instance y in Y, the entity e has at least some responsibility in R.
The formula for the indicator is then: i = |s(X, e, R)|