What is the difference between Agile, DevOps, and ITSM?

Agile focuses on flexible software development, rapid delivery of value, and adaptation to change. The main values and principles are outlined in the Agile Manifesto.

DevOps is a cultural and professional movement that combines development and operations to accelerate value delivery through process automation and close collaboration. The goal is to reduce the gap between development and operations teams.

ITSM (IT Service Management) is a set of processes and practices for planning, delivering, operating, and managing IT services throughout their lifecycle. It is based on the ISO 20000 standard and the ITIL framework (often associated with it).

Main differences:

Aspect	Agile	DevOps	ITSM
Focus	Flexible software development	Culture and automation to accelerate	Management of IT services and processes
Goal	Rapid value delivery, adaptation	Shortening delivery cycle, stability	Efficient delivery of IT services
Scope	Software development	Entire software lifecycle and infrastructure	Management of IT infrastructure and services
Principles	Agile Manifesto	Automation, collaboration, measurement, knowledge sharing	ITIL, ISO 20000

DevOps largely complements and extends Agile by applying its principles to operational activities. ITSM provides a broader structure for managing all IT services, including but not limited to development and operations. DevOps can be viewed as an approach to implementing certain aspects of ITSM, especially related to release and change management in a rapidly changing environment.