DevOps and Agile: How They Interrelate and Accelerate Software Delivery

DevOps and Agile are two of the most powerful forces in modern software development. While they originated independently, it has become increasingly clear that DevOps and Agile are fundamentally intertwined and mutually reinforcing. When thoughtfully combined, they enable IT organizations to rapidly deliver reliable, high-quality software that meets the needs of the business and customer.

In this comprehensive guide, we‘ll dive deep into the synergies between DevOps and Agile, the challenges of adopting them together, and battle-tested best practices for successfully integrating them across your people, process and technology.

Understanding the Shared DNA of DevOps and Agile

At their core, DevOps and Agile share the same essential DNA. Both aim to improve flow, shorten feedback loops, and enable learning and continuous improvement. This common foundation is why DevOps and Agile are such natural partners.

Some of the core principles that unite DevOps and Agile include:

Principle	DevOps	Agile
End-to-end ownership	Break down silos between Dev and Ops	Dev team owns code from ideation to operation
Fast feedback	Monitoring, telemetry and alerting to quickly identify issues	Test early/often, demo to users, adapt based on feedback
Iterative improvement	Optimize processes based on data	Incrementally enhance product based on learnings
Collaboration	Shared goals and metrics between Dev and Ops	Business, Dev and Test work closely together
Automation	Automate tedious, error-prone manual tasks	Automate builds, tests and other repetitive tasks

As the 2020 State of Agile report found, the top three reasons for adopting Agile are accelerated delivery, enhanced ability to manage changing priorities, and improved productivity. DevOps‘ focus on end-to-end automation and optimization directly enables faster, more flexible delivery.

How DevOps Extends and Enables Agile Development

Agile transformed how applications are developed, and DevOps extends those same principles to how applications are delivered and operated. In a sense, DevOps is about taking an "Agile-like" approach to infrastructure and operations.

Some key ways that DevOps enables Agile development include:

Continuous Integration and Continuous Delivery (CI/CD)

CI/CD is the DevOps practice of frequently merging code changes into a central repository and automatically building, testing and deploying those changes. With CI/CD, Agile teams can release new features and fixes to users quickly and safely, rather than in big, risky batches. As Puppet‘s 2021 State of DevOps report found, elite performers deploy 973x more frequently than low performers.

Agile Infrastructure and Configuration Management

DevOps brings Agile practices like version control, collaboration and automation to infrastructure. With tools like Terraform, Chef and Puppet, infrastructure is defined as code, making it easier to rapidly provision and consistently configure environments. This allows Agile teams to set up and tear down complete application stacks on-demand.

Continuous Monitoring and Observability

A core tenet of Agile is "fail fast" – release early and often, gather user feedback, and quickly course correct. DevOps enables this with tools and practices around continuous monitoring, log aggregation, and distributed tracing. By proactively detecting issues and identifying root causes, Agile teams can resolve problems before they impact users.

Automating the Agile Software Development Lifecycle

From automated testing to one-click deployments, DevOps provides the automation needed at every stage of the Agile development process. This reduces manual overhead, eliminates handoffs and accelerates the flow from idea to production-ready software. Research shows development teams that have automated most of their deployment pipeline are 65% more likely to be satisfied with their deployment process.

In practice, the fusion of DevOps and Agile often looks like embedding operations engineers within Agile teams, or Agile teams taking full-stack responsibility for building, deploying and running their applications. By "shifting left" on operational concerns, Agile teams can bake in quality, reliability and scalability from the start.

Organizational Transformation: People and Process

Successfully merging DevOps and Agile requires significant changes to organizational structures, skills, culture and ways of working. Some key considerations include:

New Team Topologies

Instead of siloed Dev and Ops teams, organizations need collaborative, cross-functional teams aligned to a product or value stream. Common models include:

• Fully embedding Ops engineers into Agile teams
• Creating a platform team that provides internal services to Agile teams
• Forming a dedicated DevOps team that consults with Agile teams
• Upskilling developers to take on end-to-end DevOps responsibilities

To enable this, hiring profiles need to shift towards full-stack engineers, and HR policies should incentivize and reward end-to-end collaboration vs. siloed specialization.

Agile Changes in Scope

Traditionally, the scope of Agile teams has been limited to "above the line" application development and testing. But with DevOps, Agile teams must broaden their definition of "done" to also include deploying, releasing and operating their applications.

Concretely, this means integrating infrastructure-as-code, CI/CD pipelines, service level objectives (SLOs), and other operational concerns into the regular Agile cadence of planning, estimating and delivering. Agile artifacts like definitions of ready and done, backlogs, and progress radiators must be expanded accordingly.

Unified Metrics and KPIs

DevOps and Agile transformations often fail because teams are measured based on divergent, conflicting metrics. Developers are goaled on velocity and feature throughput, while Ops is held accountable for reliability and stability.

To resolve this, organizations need unified DevOps and Agile metrics that balance speed and stability. Google‘s DevOps Research and Assessment (DORA) team has identified four such measures:

• Deployment Frequency: How often an organization deploys code
• Lead Time for Changes: Time from code commit to production
• Change Failure Rate: Percentage of deployments causing failures
• Time to Restore Service: Time to recover from a production failure

By focusing Agile teams on a common set of outcome-oriented metrics, they are incented to work together to optimize the end-to-end flow of value to customers.

Best Practices for Integrating DevOps and Agile

Based on lessons learned from enterprises succeeding with DevOps and Agile, here is a proven roadmap to follow:

1. Start small and focused – Avoid the temptation to "boil the ocean." Instead, pilot DevOps with one or two Agile teams and focus on delivering a single product or service end-to-end. Use this to build momentum and create reusable templates.

2. Create empowered product teams – Form small (5-9 people), autonomous, full-stack teams fully responsible for building and running a specific product or service. Embed all needed skills within the team.

3. Integrate operations into Agile rhythms – Make infrastructure, monitoring and reliability first-class citizens in Agile ceremonies. Treat operational features with the same priority as functional ones.

4. Standardize the DevOps toolchain – Equip teams with a standard set of DevOps tools for CI/CD (e.g. Jenkins), configuration management (e.g. Ansible), monitoring (e.g. Prometheus), etc. Create self-service platforms to make the right thing the easy thing.

5. Invest in test and deployment automation – Automate the build, test, deploy and release steps to create a continuous delivery pipeline. Adopt test-driven development, and aim for a one-click, zero-downtime deployment process.

6. Implement SRE practices – Adopt site reliability engineering (SRE) practices like SLOs, error budgets and blameless postmortems. Use these to balance speed of innovation with reliability and to create a culture of continual learning.

7. Measure and optimize the end-to-end value stream – Instrument and analyze the entire set of activities needed to deliver value to customers. Use value stream mapping to eliminate waste and reduce delays.

The Proof is in the Performance

High-performing IT organizations are realizing significant, measurable benefits from combining DevOps and Agile, as evidenced by:

• Accelerated software delivery: Elite DevOps performers have 208 times more frequent code deployments and 106 times faster lead time from commit to deploy than low performers.

• Improved quality and reliability: High performers have 7 times lower change failure rates and a 2,604 times faster time to recover from incidents.

• Happier, more productive teams: Teams that have adopted a DevOps culture and implemented DevOps practices have been shown to have higher levels of job satisfaction and employee engagement.

• Better business outcomes: Organizations with high DevOps adoption are 3 times more likely to see a 20%+ revenue increase and 2 times more likely to have 20%+ profit growth.

The Future of DevOps and Agile

Looking ahead, the integration of DevOps and Agile will only accelerate and mature. Emerging trends and enabling technologies to watch include:

• Value Stream Management Platforms: Tools that provide end-to-end visibility and orchestration across the entire DevOps and Agile toolchain and process.
• AIOps and MLOps: The application of artificial intelligence, machine learning and analytics to automate operations and continuously optimize models and applications.
• Chaos and Resilience Engineering: Intentionally injecting failure into systems to proactively validate resilience and recoverability.
• Low-Code and No-Code Platforms: Extending DevOps and Agile automation all the way to the business user with visual, model-driven development and delivery tools.

Ultimately, DevOps and Agile are not just a set of practices, but a cultural and mindset shift. It‘s about tearing down walls, collaborating across the value stream, and relentlessly automating and improving both what you deliver and how you deliver it. Organizations that can master DevOps and Agile will be equipped to thrive in an increasingly fast-paced, fiercely competitive, software-centric world.