The book Accelerate: Building and Scaling High Performing Technology Organizations by Nicole Forsgren, PhD Jez Humble, and Gene Kim provides evidence for the effectiveness of DevOps and its component parts.
DORA's State of DevOps periodically publishes a capability catalog in addition to the "State of DevOps" reports.
A DevOps pipeline should implement each of the capabilities and its evaluation should include the performance metrics.
"Teams that did well had fewer thatn three active branches at any time, their branches had very short lifetimes (less than a day)..." - Accelerate by Nicole Forsgren, PhD Jes Humble, and Gene Kim.
nix scripts define the build process.
Jenkins runs and reports tests.
Python unittest and pytest. Output results from pytest as JUnit formatted XML.
Python Poetry formatted package.
Container image blob.
SAST, DAST, IAST
Generate documentation with Sphinx from reStructuredText (reST) as described by PEP-287.
SRE and DevOps are Complementary