Which is the FIRST action when optimizing a service?

There are many ways in which practices and services can be optimized. Regardless of the specific techniques, the path to optimization follows these high-level steps:

Understand and agree the context in which the proposed optimization exists

Assess the current state of the proposed optimization

Agree what the future state and priorities of the organization should be, focusing on simplification and value

Ensure the optimization has the appropriate level of stakeholder engagement and commitment

Execute the improvements in an iterative way

Continually monitor the impact of optimization

https://www.bmc.com/blogs/itil-guiding-principles/