| 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.” |