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Copyright © 2015, Intellyx, LLC
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Addressing the DevOps Resilience Challenge
Jason Bloomberg
President
@theebizwizard
About Jason Bloomberg
• President of Intellyx
• Advise companies on their digital transformation initiatives & help vendors communicate their agility stories
• Write for Forbes, Wired, & DevX on Digital Transformation
• Buy my latest book, The Agile Architecture Revolution
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The Iron Triangle
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Quality: The Fourth Corner
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What about Agility?
• Business agility is a metarequirement
• Requirement that requirement change must be supported
• Balance quality and agility
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Requirement: Make the Organization More Agile
Agile Architecture Quality Star
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Best-Effort Quality
• Quality takes time, limiting agility
• Insufficient agility lowers quality
• Need to rethink approach to quality
• Preventing adverse behavior less important than automatic recovery from such behavior
– Core Cloud architecture principle
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Resilience More Important than Being Defect-Free P
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Resilience
• The ability to respond quickly and efficiently to negative change in the business environment
– Managing risk
– Bouncing back from adverse events
– Disaster recovery
• Tactical business driver
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The opposite of brittleness
Fit-for-Purpose Often Means Brittle
• Agile software built intentionally with only today’s needs in mind
• Planning for unexpected contingencies contrary to Agile approach
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Brittle software leads to brittle organizations
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The Goal of Agile Software
• Requirement to build software that responds to changing requirements
• Inherent flexibility vs. rapid development & deployment
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DevOps & AA Quality Star
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The DevOps Cadence
• Coordination of multiple iterations/sprints across multiple “projects”
• Agile approach to project/program management at enterprise level
• (Good) technical debt may cross iterations/sprints
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Bad vs. Good Technical Debt
• Bad technical debt
– Sloppy code you have to clean up later
– Rarely if ever a good thing
• Good technical debt
– Intentional missing functionality or simplifications
– Represented in backlog
– Essential part of Agile/DevOps approach
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DevOps Drumbeat
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The Design-Time Testing Conundrum
• The more dynamic and distributed the deployment environment, the less design-time QA can catch problems
• Testing increasingly in production
– At system level
• Automated rollback/graceful degradation essential to DevOps model
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Quality focus shifts to resilience
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Good Technical Debt vs. Resilience Tradeoff
• Resilience discussion focuses on risk mitigation
– Cost of mitigation vs. predicted cost of adverse event
• Do you take a shortcut on resilience or on functionality?
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DevOps Cadence vs. Iron Triangle
• Iron Triangle context: discrete software projects
• DevOps context: continuous delivery & integration across multiple, ongoing sprints
• Scope shifts forward or backward as necessary
– Reflected as incurring or paying technical debt
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Jason Bloomberg
President, Intellyx
@theebizwizard
Send email NOW to [email protected] to download this presentation
Thank You!
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