Means business providing a service (6)
I believe the answer is:
agency
I believe this is a double definition.
'means' is the first definition.
(I've seen this before)
'business providing a service' is the second definition.
(I've seen this before)
(Other definitions for agency that I've seen before include "Function of one who acts for another" , "Business that represents actors etc." , "Government office" , "Means - business" , "Bureau; instrumentality" .)