Site Reliability Engineering (SRE) is a discipline that incorporates aspects of software engineering and applies them to infrastructure and operations problems. The main goal of SRE is to create scalable and highly reliable software systems. SRE teams work to automate tasks, improve system performance, and ensure that services are available and efficient. SRE originated at Google in the early 2000s as a way to manage large-scale systems. SREs use metrics and monitoring to identify issues and implement solutions, often focusing on reducing downtime and improving user experience. By blending development and operations, SRE helps organizations maintain a balance between releasing new features and ensuring system reliability.