Enabling Agility Through DevOps

Copyright © 2018 CapTech Ventures, Inc. All rights reserved.
Others Talk,
We Listen®
Enabling Agility Through DevOps
Keep Austin Agile 2018
@CapTechListens

Bio
• Email: lnewsom@captechconsulting.com
• Twitter: @LelandNewsom
• LinkedIn: https://www.linkedin.com/in/lelandnewsom/
• Slideshare: https://www.slideshare.net/LelandNewsom
• This deck: https://capte.ch/agility-through-devops
• Past roles include:
• Developer
• Manager
• Managing Director
• Technical Director
Leland Newsom
Agile Coach, CapTech Consulting

Copyright © 2018 CapTech Ventures, Inc. All rights reserved.Copyright © 2018 CapTech Ventures, Inc. All rights reserved.
Agenda
• Why DevOps is needed
• What is DevOps
• How DevOps enables faster delivery,
higher quality, lower risk and in
more stable environments
• Results
• Getting Started
• Learn More
3
pollev.com/lelandnewsom547

IT Performance by Cluster
Puppet and DevOps Research and Assessment (DORA), 2017 State of DevOps Report

Agile - Waterfall
Agile Waterfall
• Short Iterative Cycles
• Fast Feedback
• Low Cost to Fix Defects
• Single Pass Testing Cycles
• Delayed Feedback
• High Cost to Fix Defects
TestDev
Deploy
Regression
Tests
Security and
Performance
Development Pre-Prod Prod

Traditional Approach to Operations

Why Does The Wall Exist?
Img from Game of Thrones but sourced from Google Images

DevOps as a Catalyst

Definition
DevOps is those set of cultural
norms and technology
practices that enable the fast
flow of planned work from,
among others, development,
through tests into operations
while preserving world class
reliability, operation, and
security.
DevOps is not about what you
do, but what your outcomes
are.

Three Ways: The Principles Underpinning DevOps

Three C’s of DevOps

“Continuous Integration is a software development practice
where members of a team integrate their work frequently,
usually each person integrates at least daily - leading to
multiple integrations per day. Each integration is verified by
an automated build (including test) to detect
integration errors as quickly as possible. Many teams find
that this approach leads to significantly reduced integration
problems and allows a team to develop cohesive software
more rapidly.”
-Martin Fowler
Continuous Integration

Commit
BuildTest
Code
Continuous Integration Circle

Continuous Integration
Integrate Commit to
Source Code
Repository
Auto Build
AutoAuto
Unit Tests
Code Quality
Check
Adapted from: https://www.pluralsight.com/guides/devops/everything-you-need-to-know-about-continuous-testing

Continuous Testing
https://www.tricentis.com/what-is-continuous-testing/

Write Test
Scripts
Integrate
Code
Build
Manual
Start
Integration
Manual
Start
Acceptance
Manual Start
Performance
Test
Write Test
Scripts
Integrate
Code
Build
Automated
Integration
Test
Automated
Acceptance
Test
Automated
Performance
Test
23
Test Automation vs. Continuous Testing
Automated
Continuous
Manual steps impacts
efficiency & delays feedback
No human intervention

Ideal Software Testing Pyramid
Harder
Easier
Automation
Many
Few
Brittle
Solid
70%
20%
10%

Continuous Testing
Automated
Integration
Test
Automated
Acceptance
Test
Automated
Performance
Test
Automated
Regression
Test
ContinuousIntegration
Automated
Integration
Test
Automated
Acceptance
Test
Automated
Performance
Test
Automated
Regression
Test
Automated
Integration
Test
Automated
Acceptance
Test
Automated
Performance
Test
Automated
Regression
Test
• Automated Tests at Every Step
• Automated Delivery throughout Pipeline
• Runs with Every Code Change
• Fast Feedback throughout Process
Integrate
Code
Integrate
Code
Integrate
Code

1
26
Continuous Delivery - 1st Agile Principle
Deliver
Value
Our highest priority is to satisfy the
customer through early and continuous
delivery of valuable software.

Difference in Continuous Deliver and Continuous Deployment
https://sdtimes.com/automation/guest-view-continuous-delivery-vs-continuous-deployment-whats-difference/

Practicing Continuous Integration, Testing, and Delivery
modified from: https://continuousdelivery.com/2010/02/continuous-delivery/
Delivery Team
Version
Control
Build & Unit
Test
Integration
Tests
Acceptance
Tests
!
!
Check in
Check in
Trigger
Trigger
Trigger
Feedback
Feedback
Check in
Trigger
Trigger
Feedback
Feedback
Manual
Approval
Feedback
Feedback
Feedback
Trigger
Release

Goal: Increase release frequency and not increase risk.
• Decouple releases from deployments & development cadence
• Application-based patterns
• Feature toggles
• Dark launches
• Use Environment-based release patterns
• Canary Releases
• Blue-Green pattern
Risk Mitigation in Continuous Delivery
Blue-green deployment pattern (Source Humble and North, Continuous Delivery, 261).
Users Router
Web Server
V 1.0
V 1.1
App Server
V 1.0
V 1.1
DB Server
V 1.0
V 1.1

Infrastructure as Code
Img source: https://bitninja.io/blog/2018/01/26/describe-your-infrastructure-as-code

Why?
• Repeatability
– Idempotent – can be applied
multiple times without changing the
results
• Speed
• Accuracy
• Testability
• Agility
What? IaC is treating the
configuration and definition of
systems just like writing
software.
• Source code management
• TDD of environments
• Constant Refactoring
• Apply Continuous Integration
• Apply Continuous Testing
• Apply Continuous Delivery
Infrastructure as Code

Development & Ops Cross-Team Collaboration
Source: Forrester Report Feb 2015 – Infrastructure as Code: Fueling the fire for faster application delivery

Improve Collaboration is a Critical Benefit
Source: Forrester Report Feb 2015 – Infrastructure as Code: Fueling the fire for faster application delivery

Measurable Benefits of DevOps1
IT Performance Metrics 2017
Deployment frequency 46x more frequent
Lead time for changes 440x faster
Mean time to recover (MTTR) 96x faster
Change failure rate 5x lower
Unplanned work and rework 21% less
Time spent on new work 44% more

Forrester: Agile & DevOps Transformations Together vs. Separate
Benefits
Single
Transformation
Separate
Transformation
Greater frequency of delivery 83% 75%
Better business/IT alignment 74% 59%
Improved functional quality 72% 47%
Faster business value 69% 41%
Improved technical quality 64% 29%
Greater predictability of releases 55% 35%
Continuous delivery 47% 24%
Greater predictability of results
aligned with requirements 47% 22%
Forrester Blog – Agile Only? No thanks! Agile + DevOps Please! – Dec 2017
https://go.forrester.com/blogs/agile-only-no-thanks-agile-devops-please/

Adopting DevOps: Recommendations
Implement incremental capabilities more than wholesale changes
Promote standards more than enforcing rules
Use consumable services and recipes more than controls and checklists
Leverage continuous learning more than end-of-phase gates
Build on culture change more than centralized governance

Adopting DevOps: Recommendations
Implement incremental capabilities
more than wholesale changes
Promote standards
more than enforcing rules
Use consumable services and recipes
more than controls and checklists
Leverage continuous learning
more than end-of-phase gates
Build on culture change
more than centralized governance
Introducing individual improvements, such as continuous integration or
automated regression testing, yields quick wins that compound over time.
Automated build and release processes provide transparency on product quality
and can measure releases against standards that improve each iteration.
Implementing core automation capabilities with centrally managed, full-stack
engineers helps promote consistency across teams and accelerate adoption.
Gathering frequent feedback helps automation engineers meet the needs of
product owners, developers, and testers on the true requirements.
Federating competencies to development teams promotes sustainability and
encourages collaboration across teams to enhance capabilities.

Enterprise Agile
• Project and program management practices
have been adopted enterprise wide
• Business understands and contributes to agile
practice
Enterprise DevOps
• Standardized use of DevOps tools
• Automation supports all stages of SDLC
• Business and IT teams collaborate to foster
advancements and innovation
Team-Level Agile
• Development portion of SDLC process adheres
to agile principles
• Independent use of continuous integration
tools
Team-Level Continuous Delivery
• Product-level SDLC automation for build, test
and deployment processes
• Operational teams treat as exception, not rule,
when managing rollouts
Understand your path
Technology
People&Process

Getting Started
Agree on
Where to
Start
Align on
Outcomes1
Map the Value
Stream
Determine
How to
Execute
Choose a candidate
area for focus that is
important
• More frequent
deployments
• Shorter delivery
lead time
• Shorter Mean
Time To Recover
• Lower change
failure rates
• Walk the process
collaboratively
from end to end
• Identify issues,
waste,
bottlenecks
• Build an
improvement
backlog
• Who is the
team?
Stakeholders?
• Who sets
priorities?
• How will work
get done?
• How will
progress be
measured?

Continuous Improvement and Feedback Loops
Continuous Improvement
Continuous Feedback
Continuous
Integration
& Testing
Continuous
Delivery &
Deployment
Continuous
Operations &
Monitoring
Build
Test
Release
Deploy
Operate
Monitor

• Forrester Blog – Agile Only? No thanks! Agile + DevOps Please!(Dec 2017)
– https://go.forrester.com/blogs/agile-only-no-thanks-agile-devops-please/
• Forrester Report – Infrastructure as Code: Fueling the fire for faster application delivery (Feb
2015)
– https://devops.com/forrester-devops-white-paper/
• 2017 State of DevOps Report
– https://puppet.com/resources/whitepaper/state-of-devops-report
• Google Testing Blog
– https://testing.googleblog.com/2015/04/just-say-no-to-more-end-to-end-tests.html
• Pluralsight – Everything you need to know about Continuous Testing
– https://www.pluralsight.com/guides/devops/everything-you-need-to-know-about-continuous-testing
Learn More

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