DevOps maturity is made up of a variety of factors including cultural, technical, and process-related elements, and simple KPIs can help you measure these factors to indicate the maturity of your DevOps function.
Tuckman’s stages of group development can help us understand the phases of DevOps maturity:
So now that we’ve outlined the four stages, how do we measure that journey?
Whilst there are many more metrics to consider which link to DevOps maturity, these five KPIs are a great place to start.
MTTF: Mean Time to Failure
This refers to the length of time until the next failure and how often your deployment causes a failure. If failures are happening frequently, it indicates a potential problem with software or a lack of testing for bugs.
MTTD: Mean Time to Detect
This refers to how long it takes for a DevOps team to detect an error. Teams that are less mature will take longer to detect issues because they have little to no monitoring implemented, so it’s hard to replay or track events leading to an error. A more mature team can detect issues more effectively as they have the logs and performance data to utilise.
MTTR: Mean Time to Repair
Naturally this refers to how long it takes to fix an error. A more immature team will experience longer time to repair because they lack the knowledge and experience to fix issues quickly. More mature teams should have that knowledge and experience, and be sharing this across the team, leading to lower MTTR rates.
Deployment Success Rate
This calculates the rate of successful and unsuccessful deployments and should be as high as possible. Mature teams will have higher success rates, whilst less mature teams will experience lower success rates. Automating and standardising the deployment process will help improve the success rate.
High deployment frequencies are often a sign of an optimised CI pipeline and an agile approach which indicates a more mature DevOps team. This is because their processes are already streamlined and standardised, compared to a less mature team.
Metrics are key to measuring DevOps maturity. Once you understand how these metrics relate to the maturity of your DevOps function, it’s easy to track your journey and see what next steps you need to take to get to that next level of development.
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