SRE vs. DevOps: Know the Differences| InstaSafe Blog

With the increasing application and software development complexity, organisations and companies are increasingly adopting operational solutions and methodologies that enable faster and more secure software development.

Two such very important and popular methodologies include DevOps and Site Reliability Engineering (SRE), which boost the product's and application's release cycle with automation, continuous delivery and monitoring, and collaboration.

However, many confuse these two models to be the same when there's clearly a stark difference between SRE and DevOps as a service.

In this article, we discuss these two operational models and highlight the differences between them for a clear understanding of SRE and DevOps.

Understanding DevOps

DevOps is a comprehensive set of practices where the operations and the development teams come together for seamless team collaboration to eliminate company silos, leverage automation, make implementing gradual changes a breeze, and handle failure much more efficiently.

It glues together development, IT operations, security, and quality assurance to ensure Continuous Integration (CI) and Continuous Delivery (CD) to deliver high-quality and reliable products or software to the customers much faster.

Here are the benefits of a secure DevOps solution for your organisation:

Improves the speed of applications and software delivery with frequent release of small features and changes.
Automates repetitive tasks resulting in rapid innovation.
Reduces production costs by cutting down maintenance and infrastructure management errors.
Enhances the productivity of software teams by creating a balanced solution for managing a Software Development Lifecycle (SDLC).
Resolves queries and problems much more effectively and faster.

Let's take a look at SRE and its benefits.

Understanding SRE

Site Reliability Engineering or SRE's responsibility is to implement the product or software the core development team develops. Their key objective is implementing and automating DevOps practices to reduce errors and incidents and enhance scalability and reliability.

In addition, they also send constant feedback and suggestions to the DevOps teams based on Key Performance Indicators (KPIs), like efficiency, availability, latency, incident, and capacity.

Thus, SRE engineers are in charge of operations and ensuring higher reliability.

Talking about SRE vs DevOps engineer, here are the key responsibilities of an SRE engineer:

Handling and managing support escalation issues.
Configuring, developing, and deploying software to be utilised by the operations team.
Change management.
Developing system documentation.
Conducting incident reviews and reporting on them.
Deciding and validating new updates and features.

Now, let's see the key differences between DevOps and SREs.

SRE vs DevOps: Know The Differences

Here are the major and most important differences between SRE and DevOps technologies.

Factor	DevOps	SRE
Key role	The DevOps team's key role in solving development-related problems and building solutions that ensures faster product delivery and cater to the organisation's requirements.	SREs mainly deal with and handle operational-related issues, like production failure, monitoring, security, and infrastructure issues (memory and disk).
Tools	The main tools used by the DevOps team include Integrated Development Environment (IDE), Jenkins for CI and CD, JIRA for change management, SVN, GitHub, and Splunk for long monitoring.	Tools used by SREs include Grafana and Prometheus, Ansible, JIRA, GitHub, SVN, Puppet or Chef, GCP, AWS, Azure, and Kubernetes & Docker container orchestration.
Focus	DevOps covers the entire Software Development Lifecycle, focusing on product development for continuous delivery and integration.	They cover the software environment's availability and stability, scaling, resilience, reliability, robustness, and uptime.
Measurement metrics	DevOps use Deployment Frequency and the Deployment Failure rate as their primary and most important measurement metrics to measure their success.	The measurement metrics SRE engineers use are Service Level Objectives (SLOs), error budgets, Service Level Agreements (SLAs), and Service Level Indicators (SLIs).
Bug reporting	The DevOps team debugs the code in case of bug reports at the end of the product or SDLC.	The SRE team reports the bugs to the core development team while not getting involved in the debugging process unless in case of a production outage. At the same time, the SRE team is also responsible for fixing and debugging infrastructural issues.
Incident handling	The DevOps team receives and works on incident feedback to combat risks and issues.	Send the incident reports to the core development team and perform the post-incident reviews. It helps them find the root cause of the issues and document the results to send the feedback back to the development team for future references and SDLCs.
Team structure	A DevOps team is composed of cross-functional and various roles, including developers, engineers and QA experts.	An SRE team includes Site Reliability Engineers with a background in IT operations and development.

Conclusion

DevOps and SRE are almost the two sides of the same coin, sharing similar core values with their focus on work being different from one another.

While DevOps ensures continuous improvement and delivery of the products and software, SRE ensures that the environment in which the products or applications are run or deployed is scalable, reliable, and secure.

Thus, when SRE and DevOps coexist, they ensure reliable and high-quality software releases for the end-users and high customer satisfaction.