What are DevOps, DevSecOps, and SRE, and differences among them?

DevOps – DevOps is the combination of culture, practices, and tools that increase an organization’s ability to deliver applications and services at high quality, as well as automate and integrate the processes between development and IT teams.


DevOps teams use tools to automate the process, which helps to increase reliability and efficiency.
DevOps ensures fast software delivery with minimum problems to fix and faster solution to problems.
The term DevOps has been made up of two words development and operations.


DevOps is a process that permits the Developer and operation teams to collaborate with each other to manage the whole application development life cycle, i.e. development, testing, deployment, monitoring, etc. DevOps aims to shorten the period and cost of development of the application.

DevSecOps – DevSecOps is a useful umbrella term that collects the processes introduced by organizations who want to run their operations on AWS, Azure, and Google cloud.


DevSecOps is about not only making software easily installable but making the process of installing it more secure and usable.

DevSecOps is not only making the software installation easy, but it makes the installation process more secure and usable as well.


Prior, the development cycles lasted for months or even years, and the release of new versions or software updates of their applications used to be released just once or twice a year.
It gave enough time for quality assurance and security testing teams to carry out security measures which is make the process very slow.


But these outdated security practices or separate security teams cannot keep up with the speeds of DevOps initiatives.
This vulnerability leads to the evolution of the DevSecOps methodology, where the development, operation, and security team, work together and share end-to-end responsibilities in the entire development life cycle to finish the project in less time.


DevSecOps methodology automates the integration of security at every stage of the software development lifecycle, from the initial design.


DevSecOps integrates the security of application and infrastructure seamlessly in Agile and DevOps processes and tools.

SRE – SRE stands for site reliability engineering.


In around 2000 Google realize DevOps is good as it is but there is something else that can be done. So there were a lot of different ideas flowing around then Google come up with this idea called an SRE.


It is a software engineering approach to operations where an SRE team uses software as a tool to manage systems and solve problems and automate operational tasks.


So basically, SRE takes the tasks which have been done often manually by the operation teams and instead of giving them to engineers or Operations teams who use software or automation to solve these problems, they do it themselves and manage the production environment.


In other words, SRE teams are made up of software engineers who build and implement software to improve the reliability of their systems.


SRE teams are responsible for how code is deployed, configured, and monitored as well as checks for the availability, latency, change management, emergency response as well as capacity management of service in production.


So how SRE does all these things, Basically it helps to determine the new features that are being launched, they test it across a few different metrics, so they check it across these things called SLA (Service Level Agreement), SLI (Service level indicator), and SLO (service level objectives).

Differences between DevOps, DevSecOps, and SRE

DevOps, DevSecOps, and SRE all work to bridge the gap between development and operation teams to deliver faster and reliable services.

DevOps and DevSecOps


DevOps is the process of integrating development and operations and focuses on eliminating the communication gap between different teams so that the whole code development and deployment process is done faster whereas DevSecOps solves the security concerns along with deployment.


DevOps is only responsible for Development and operational tasks related to a single project but DevSecOps suggests that security is everyone’s responsibility.


DevOps team requires the skillset of Linux fundamentals and scripting knowledge of various tools and technologies whereas DevSecOps engineers should be skilled with addressing the vulnerabilities with automated security tools. Need to have knowledge in cloud security and provide support to infrastructure users.


DevOps has some benefits like speed, rapid delivery, reliability, scale, improved collaborations, security whereas DevSecOps has improved agility, considers security automation, keeps security as code.


Automation is done for security testing so the development is tested on regular basis.

The report generates if any vulnerabilities are found during CI and CD. DevSecOps never allow security to get compromised. whereas automation in DevOps is for releasing codes in a higher environment. This helps developers to know about the changes has done by the members and to work accordingly.


Monitoring the security incident is done through incident management. Proper standards are created to raise Thus security concerns are managed in DevSecOps. In DevOps, Application infrastructure is managed through codes as infrastructure as codes. Here designing and managing the code is happen on the same platform.

DevOps And SRE


DevOps reduce silos whereas SRE doesn’t concern about the silos. DevOps involve unexpected failures, whereas SREs focus on no failure happening at all.


The automated workflow needs constant monitoring, in this process DevOps team ensures software is working effectively whereas SRE believes that operations are a software issue.


SRE practice involves a contribution from each level of the organization whereas DevOps is all about development and operations only.


SRE uses developers and tools to solve IT operation problems and workflow problems. Thus, SRE does most things through software engineers whereas DevOps uses a development and operation team to finish the work from building to deploying the software in the market.


SRE doesn’t have any special script to follow, but it offers a hard prescription to solve the problems and which tools to use. Whereas DevOps has a development lifecycle that describes what to do.

All these courses are being done at one of the best platforms which are DevOpsschool. If anyone is looking for an institute where you can learn DevOps, you should go for this.

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