Foundations of Sustainable Software

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Ryan Cromwell SUSTAINABLE SOFTWARE

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For makers, there is no better feeling than seeing something you've made being used.

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Sustainable Development ‣ Having conﬁdence in your efforts ‣ Feeling in control of the process ‣ Can do it consistently over time

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We'll know more tomorrow than we do today. ~ Sparkbox, every day

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How do you balance? Learning Conﬁdent Control Consistency

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Conﬁdent Control Consistency Learning

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https://seesparkbox.com/foundry/how_we_do_discovery Sparkbox Discovery ‣ Research ‣ Strategy Meeting ‣ Project Brief ‣ Technical Strategy ‣ Design & UX Strategy

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Continuous Discovery Planning Build

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Continuous Discovery Planning Build & Technical

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A Tech Lead is... ‣ right hand to the project manager ‣ measured by the success of the team ‣ regularly describing the technical vision ‣ model of "how we work together" ‣ empowering and unlocking the team through communication, leadership, technical skill, and impact

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Tech Lead: Sustainable Software ‣ Shared Technical Vision ‣ Planning ‣ Building ‣ Feedback system ‣ Evolving architecture

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www.seesparkbox.com HAVE A TECHNICAL VISION

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Technical Vision: High-level Architecture

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Technical Vision: High-level Architecture

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Technical Vision: High-level Architecture

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Technical Vision: Integration Considerations

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Technical Vision: Integration Considerations

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Technical Vision: Diagrams

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A technical vision enables decision making.

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www.seesparkbox.com PLANNING

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Pre-work ‣ Next stage vision ‣ Scenarios ‣ Diagrammed next step of the architecture ‣ “Decomps” ‣ Others: Wireframes, Designs, etc

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Planning & Building: Next Stage Vision

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Planning & Building: Next Stage Vision

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Planning & Building: Next Stage Vision

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Planning & Building: Next Stage Vision

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Planning & Building: "Decomps"

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Planning & Building: "Decomps"

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Productive Planning ‣ Walk through the plan ‣ Create or review cards together ‣ Discuss questions ‣ Clarify understanding

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Consistent, thoughtful planning provides conﬁdence and enables decision making.

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www.seesparkbox.com BUILDING

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Building Conﬁdence Conﬁdence ‣ Validate assumptions ‣ Integrating often ‣ Test suite ‣ Deploying frequently

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A great build and deployment pipeline encourages collaboration and transparency. https://seesparkbox.com/foundry/successful_software_build_and_deployment_pipelines

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Engineer for speed & conﬁdence ‣ Keep "master" deployable ‣ Small evolutions ‣ Fixture feature ﬂags ‣ Unpublished urls ‣ Creating architecture seams https://seesparkbox.com/foundry/sustainable_software_decoupling_delivery_and_release_for_continuous_integration

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Build with Conﬁdence ‣ Clear, shared vision ‣ Robust build & deploy pipeline ‣ Technical Skill

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www.seesparkbox.com FEEDBACK

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Value Stream Metrics

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Operational Health

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Operational Health

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Architecture Health

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Architecture Health Unchanging Infrastructure

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Architecture Health Simple, Safe to change

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Architecture Health Danger Zone

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Learning through feedback ‣ Operational insights ‣ Architecture insights ‣ Value stream metrics

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Sustainable Software ‣ Thoughtful, continuous planning ‣ Robust build & deploy pipeline ‣ Solid engineering practices ‣ Great communication

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Ryan Cromwell THANK YOU!