ITSM - ITIL : How Similar and How Different?

ITSM	ITIL
ITSM stands for IT service management.	ITIL meaning IT infrastructure library
It is the process involved in managing IT services provided to customers (like planning, delivering, operating and controlling )	It is a structure consisting of the best practices of ITSM.
ITSM covers frameworks like Six Sigma, COBIT, DevOps, ITIL	To implement ITSM, we use ITIL
ITSM is focused on planning and Managing changes to changes to keep business profitable	ITIL is more customer focused, with providing services to customers.
ITSM is at overall organizational implementation level	ITIL is a collection of process that guide the delivery and support of IT services at project or delivery level
ITSM describes the “what”	ITIL describes the “how.”

ITSM – ITIL : How Similar and How Different?