Crawl, Walk Run
The practice of FinOps is inherently iterative and maturity of any given process, functional activity, Capability or Domain will improve with repetition.
A "Crawl, Walk, Run" approach to performing FinOps enables organizations to start small, and grow in scale, scope and complexity as business value warrants maturing a functional activity. Taking quick action at a small scale and limited scope allows FinOps teams to assess the outcomes of their actions, and to gain insights into the value of taking further action in a larger, faster, or more granular way.
In assessing the state of an organization's FinOps Capability or Domain, we can also use these maturity designations to identify where we are currently operating, and to identify areas we'd like to move from a Crawl to a Walk, or from a Walk to a Run maturity.
Maturity Model

There are six specific domains in FinOps according to the FinOps Foundation. We will want to be able to understand what topics are covered by each domain. The FinOps Foundation has put out an excellent downloadable poster that we should use as a study aid. https://www.finops.org/img//resources/FinOps%20Poster_011021.pdf