Concepts in Agile & Scrum
The Agile Manifesto: A Shift in Software Values
The Agile Manifesto is a value system, not a rigid process. It prioritizes people, working software, customer collaboration, and adapting to change over rigid plans and documentation. This philosophy underpins frameworks like Scrum.
Waterfall Model: Build Software Like a Building
The Waterfall model treats software development like building a house: each phase is fully completed before the next begins. It suits projects with fixed requirements, but its major footgun is that late-stage changes can force a costly restart from the…
Lean Software Development: Focus on Value, Not Waste
Lean Software Development applies manufacturing principles to code, focusing on maximizing value by systematically eliminating waste. It's the philosophy behind Kanban-style pull systems and delaying decisions.
The Seven Wastes of Software Development (Muda)
Think of "Muda" as anything consuming resources without adding customer value. This Lean concept helps agile teams spot inefficiencies like partially done work and context switching.
Cycle Time vs. Lead Time: Team Speed vs. Customer Wait
Lead Time is the total time a customer waits for a feature, from request to delivery. Cycle Time is the portion of that time your team is actively working. The footgun is optimizing only for Cycle Time, which can hide major customer-facing delays in the.
Toyota Production System (TPS): The Original Lean
The Toyota Production System (TPS) is a complete socio-technical system, not just a toolkit. It organizes manufacturing and logistics from suppliers to customers.
Empirical Process Control: Steer by Observing, Not by Plan
Empirical process control means steering by observation, not by a rigid upfront plan. Scrum uses this to tackle complex problems, inspecting real work in Sprints to adapt. The footgun is fake transparency—if artifacts hide problems, you're steering blind.
Value Stream Mapping: Find the Waste in Your Process
Value Stream Mapping visualizes your entire process, from request to delivery, to separate value-adding work from wasteful delays. It's used to find bottlenecks in manufacturing or software, like code waiting for review.
The Sprint: A Timeboxed Rhythm for Work
A sprint is a fixed-length container, typically 1-4 weeks, where a team turns ideas into a valuable product increment. Sprints give a predictable rhythm to software teams and marketing campaigns. The footgun is treating a sprint as a mini-waterfall project.
The Daily Scrum: A 15-Minute Team Sync
The Daily Scrum isn't just a status update; it's a 15-minute planning session for the next 24 hours. Team members sync on progress, identify blockers, and adjust their plan for the day. The footgun is treating it as a report to a manager.
The Scrum Master: A Coach, Not a Manager
A Scrum Master is a servant-leader who coaches a team on Scrum practices, not a project manager who assigns tasks. They facilitate events and remove impediments. The footgun is treating them as a team admin, which undermines the team's self-organization.
User Stories: What Users Want, and Why
A User Story is a simple description of a feature from the user's perspective, focusing on the 'who, what, and why' instead of technical details. It's the primary unit of work in Agile, building a shared understanding of what to build.
User Stories: Features from the User's Perspective
A user story is an informal, natural language description of a software feature from the end user's viewpoint. Used in agile development, they're written by stakeholders like clients or developers on Post-its or in apps.
Minimum Viable Product (MVP): Learn Faster with Less Code
An MVP is the smallest product version that delivers value to early users and provides feedback for future development. Use it to test a business hypothesis with minimal resources, like a single-feature app.
The MoSCoW Method: Prioritizing for Fixed Deadlines
The MoSCoW method protects deadlines by sorting work into four buckets: Must Have, Should Have, Could Have, and Won't Have this time. It's used in agile projects with fixed timelines to ensure critical features ship.
User Story Mapping: From Backlog to Value Map
User Story Mapping reframes your backlog from a feature list into a map of the user's journey, focusing on delivering outcomes customers value. It helps teams prioritize work by visualizing the whole experience.
Stakeholder Mapping: Prioritizing Voices by Power and Interest
Stakeholder mapping visualizes who to engage by plotting their power and interest in your project. Use it to decide who needs daily updates versus a quarterly summary. The footgun is treating it as static; a stakeholder's influence can change overnight.
Definition of Ready (DoR): The Bouncer for Your Sprint
The Definition of Ready (DoR) is the bouncer for your sprint, a checklist ensuring a user story is clear and actionable before the team commits to it. It prevents starting work on half-baked ideas. The footgun is making it too rigid, creating a bottleneck.
Weighted Shortest Job First (WSJF): Prioritizing for Economic Impact
WSJF prioritizes work by its economic impact over time, not just its total value. It sequences backlogs in SAFe by dividing the "cost of delay" by job size. The footgun is getting bogged down in precise estimates instead of using relative sizing.
Servant Leadership: Serve First, Lead Second
A servant-leader inverts the power pyramid, focusing on their team's growth over their own power. This is common in Agile, where scrum masters remove blockers to help developers perform at their best.
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