The success of your cloud solution depends on its reliability. Reliability can be broadly defined as the probability that the system functions as expected, under the specified environmental conditions, within a specified time. Site reliability engineering (SRE) is a set of principles and practices for creating scalable and highly reliable software systems. Increasingly, SRE is used during the design of digital services to ensure greater reliability.
https://learn.microsoft.com/en-us/azure/architecture/example-scenario/apps/scalable-apps-performance-modeling-site-reliability
