Continuous monitoring helps to understand application and infrastructure performance impacts on the customer. By analyzing data and logs, you can learn how code changes impact users. Active monitoring is essential in the era of 24/7 services and constant updates to both applications and infrastructure. You can be more proactive about monitoring services by creating alerts and performing real-time analysis.

You can track various metrics to monitor and improve your DevOps practice. Examples of DevOps-related metrics are:

• Change volume: This is the number of user stories developed, the number of lines of new code, and the number of bugs fixed.
• Deployment frequency: This indicates how often a team is deploying an application. This metric should generally remain stable or show an upward trend. 
• Lead time from development to deployment: The time between the beginning of a development cycle to the end of deployment can be used to identify inefficiencies in the intermediate steps of the release cycle.
• Percentage of failed deployments: The percentage of failed deployments, including the number of deployments that resulted in outages, should be a low number. This metric should be reviewed in conjunction with the change volume. Analyze potential points of failure if the change volume is low but the number of failed deployments is high.

• Availability: Track how many releases caused failures that possibly resulted in violations of Service-Level Agreements (SLAs). What is the average downtime for the application?
• Customer complain volume: The number of complain tickets filed by customers is an indicator of the quality of your application.
• Percentage change in user volume: The number of new users signing up to use your application and the resulting increase in traffic can help you scale your infrastructure to match the workload.

After you deploy builds to the production environment, it is essential to monitor the performance of your application continuously. As we discussed about automating environment , so let explore more details on IaC.