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The Business Case for DevOps

Matthew Skelton

SoftwareOperability.com

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Who?

@matthewpskelton

Build & Deployment @ thetrainline.com

London Continuous Delivery meetup group

“How to make software work well in Production”

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The Business Case for DevOps

definition

story

acronym

exploration

case study

book

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The Business Case for DevOps

Terminology

Technology shift

Software operability

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DevOps

“Highly Effective Communication”

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DevOps?

Devs doing ops?

Ops doing dev?

Infrastructure scripting?

Special ‘DevOps’ team?

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DevOps

Devs doing ops

Ops doing devInfrastructure scripting

Special „DevOps‟ team(etc.)

The only effective way ofdelivering reliable 21st-century

web-based software systems

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DevOps = CAMS

CultureAutomation

Measurement Sharing

John Willis (@botchagalupe)

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DevOps = CAMS

Culture

Automation

Measurement

Sharing

“Highly Effective Communication”

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The Business Case for DevOps

Terminology

Technology shift

Software operability

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Technology Shifts

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“You can now install the latest version of our product ordering

software onto your in-house servers every 6 months from a

single CD-ROM”

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DevOps:

Do or Die*

* for web operations

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The Business Case for DevOps

Terminology

Technology shift

Software operability

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Operability

How well things work in Production

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Operational Features

Non-functional requirements

Operational features

Operations folk are people too

Operational and End-User features prioritised together

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Poor Operability

• Unclear or missing log messages

• Limited hooks for monitoring

• Cascading failures

• “Fair weather” assumptions

• Lack of resiliency

• Unpredictable failure modes

• ...

• Wasted $$$$$

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No DevOps?

Poor Dev + Ops communication & collaboration

Poor operability

Wasted $$$$

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Case Study – thetrainline.com

• Top travel booking website in UK (Hitwise, 2012)

• £1.2bn annual revenue

• 9 million+ visits per month

• Booking engines for many UK train operators

• Ticketing systems for Corporates and TMCs

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Case Study

A B C

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Case Study – Lessons

• Downtime costs money• Operability is a key requirement• Consider both software and teams

• Identify operational criteria early• Draft run book from the Dev team• Follow-up on incidents with Dev teams

• Schedule operational features alongside end-user features

• ...

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DevOps

DevOps provides the communication and cooperation

needed in order to deliver reliable 21st-century web-based software

systems

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Impediments to DevOps

• Capex/Opex split

• Project-driven development

• Product Owners not responsible for the operational success of the product/service

• Developers not on call for incidents

• Intermediaries between Dev and Ops

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Further Reading

• Niek Bartholomeushttp://niek.bartholomeus.be/

• “The Top 11 Things You Need To Know About DevOps” – Gene Kim

• John Clapham (Nokia Entertainment) http://www.infoq.com/articles/monthly-devops-01-nokia

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The Phoenix Project

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Getting Started

Don‟t wait for business approval

“Hey, we need to move our software applications from the desktop to the web”

“We don‟t need the web”

Start on a small project and deliver

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Today‟s Sessions

• Ron Gidron – faster, cheaper, safer deployments

• Stephen Nelson-Smith – Test-Driven Infrastructure

• Peter Eeles – DevOps and the Integrated Supply Chain

• Gary Valler – DevOps, agility, and Continuous Delivery

• Alex Papadimoulis – Implementing DevOps

• Dan North – Agile Techniques in System Administration

• Rainer Heinold – Learning from Open Source

• PANEL – Open and Inner Source Tools

• James Betteley – DevOps Anti-Patterns

• Kiffin Gish – Case Study: Agile & IT Ops

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The Business Case for DevOps

“Highly effective

communication”

Shift in technology

Operability

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Q & A

http://SoftwareOperability.com/ + @Operability

Thanks:@johnC_bristol, @LordCope, @niekbartho, @perryofpeek, Unicom

Photo credits: http://www.flickr.com/photos/{peterboden, vernhart, 86624586@N00, calsidyrose, barbourians, ginable,

blmiers2, simontaylor, coneee, 9479603@N02, charlenesimmons, practicalowl, 38019504@N04, jjcd7}Wikimedia Commons, fullbodytransplant.wordpress.com, seanlabel.com,

cs680.cs.usfca.edu/lectures/overview, www.scientific-solutions.com, thoughtsfromanobservationalist.wordpress.com,