DevOps approaches business problems with collaboration, automation, and integration.
One of DevOps’ primary goals is continuous delivery. Lean and agile software development methodologies strive to deliver value to customers continuously. Automation and integration support smaller, more focused releases, which help businesses increase velocity without compromising reliability.
Lean and agile development teams share ideas, work together to deliver solutions, and continuously improve products and processes. DevOps’ commitment to cross-functional collaboration throughout the product lifecycle makes it a natural fit for Lean and agile teams.
SRE focuses on the stability of the tools and features in production. It seeks to maintain low failure rates and high reliability for end users. This includes system scalability and robustness.
DevOps focuses on using a collaborative approach for building tools and features. It strives to identify and implement the best ideas by including the development and operations teams.
SRE’s primary responsibility is system reliability. Regardless of the features deployed to production, SRE ensures they don't cause infrastructure issues, security risks, or increased failure rates.
DevOps is responsible for building the features necessary to meet customer needs. Unlike older approaches, DevOps increases its efficiency through collaboration across the development and operations teams.
SRE strives for robust and reliable systems that allow customers to perform their jobs without disruption.
DevOps aims to deliver customer value through streamlining the product development lifecycle and accelerating the rate of product releases.
SRE teams are often highly specialized with a much narrower focus than DevOps teams. SRE may include security specialists whose primary concern is protecting business data and complying with regulations.
DevOps, however, integrates and collaborates across development and operations to collect and implement the best possible solutions. With more varied input, teams can identify and solve problems before they reach production.
SRE views the production environment as a highly-available service. Its processes focus on increasing reliability and decreasing failures. This could include security threats and failures from newly deployed features and integrations.
DevOps operates like an Agile development team. It designs processes for continuous integration and faster delivery. This includes breaking large projects into smaller chunks of work and generating and prioritizing ideas based on customer value.