If you ask me, I have listed down these 10 things to justify the need of DevOps in any organization.
To improve the end-to-end customer experience
To develop or deploy cloud-based applications in scale
To release apps and features more quickly and efficiently to meet customer demands
To simultaneously deploy across different environments
For better collaboration between development and operations team
To better operate in the complex IT infrastructure
For better version control and resource management
For a stable operating environment
To mitigate the blame game between the teams
To find bugs as soon as they appear and address them immediately, so they don't reach your customers.
Want to add anything else to this list? Go ahead.