Feature driven development for software enginerring

feature driven develpment

1. Feature Driven Development (FDD) Presented by Rajesh Kumar G Sonachalam

2. What is Feature Driven Development (FDD)? Planning + Agility Core Idea : FDD is an agile framework that blends upfront architectural planning with short, iterative development cycles. It's built on a simple premise: "Deliver tangible, client-valued features repeatedly.“ Key Characteristics : Domain Modeling First : Understand the "big picture" before you start building. Feature-Centric : All work is broken down into small, business-facing features. Code Ownership : Promotes high quality and accountability. Visible Progress : Progress is measured by completed features, not abstract tasks.

3. The 5 Processes of FDD A Structured and Repeatable Workflow Develop an Overall Model : The "Blueprint." A collaboration between developers and business experts to map out the entire system. Build a Features List : The "Scope." A comprehensive list of all the functions the system needs to perform. Plan By Feature : The "Roadmap." Sequence the features for development and assign them to teams. Design By Feature : The "Mini-Sprint." A short, focused design and inspection for each feature. Build By Feature : The "Implementation." Code, test, and integrate the feature in a two-week cycle.

4. Modern Case Study: " Insur -Now" Digital Transformation Title : Case Study: Modernizing a Core Insurance Platform The Challenge : Their core system was a 30-year-old mainframe monolith. It was slow, expensive to maintain, and impossible to adapt for modern digital products (like mobile apps or partner integrations).

5. Case Study in Action: (Process 1) Modeling the Domain Creating the " Insur -Now" Blueprint Action : The project's Chief Architect and lead developers held a series of workshops with senior underwriters and claims adjusters (the domain experts). Outcome : They produced a detailed object model that became the "single source of truth" for the entire project. It defined core concepts like Policy, Customer, Claim, and Rider and all their intricate relationships. Benefit : This eliminated ambiguity. Every developer, business analyst, and tester now had a shared, precise understanding of the business domain, preventing costly errors later.

6. Case Study in Action: (Process 2 & 3) From Model to Roadmap Building the Backlog and Planning the Work Action : Using the model, the team identified over 1,000 features. Features were written in clear, business-centric language: "Generate a quote for an auto policy." "Calculate the risk score for a new applicant." "Process a payment for a policy renewal." These features were then prioritized and grouped into major milestones. Benefit : The immense project was now broken down into a visible, manageable, and prioritized roadmap. The business knew exactly what to expect and when.

7. Case Study in Action: (Process 4 & 5) The "Feature Factory" The Two-Week Rhythm of Design & Build Action : The development teams entered a steady, two-week iterative cycle for each feature. The "Feature Team" (a small, dynamic group) would first Design the feature, creating detailed sequence diagrams. This design was inspected by peers to catch flaws early. The team would then Build (code and unit test) the feature. The completed feature was integrated into the main system. Benefit : This created a "feature factory." Every two weeks, demonstrable, working software was produced. Progress was constant, tangible, and predictable.

8. The Results: Measuring the Success of " Insur -Now" Key Outcomes : Predictability : The team consistently delivered working software every two weeks, building immense trust with business stakeholders. Quality : Because of the focus on design inspections and code ownership, the number of post-release bugs was 60% lower than previous company benchmarks. Scalability : The FDD process scaled effectively across the large, distributed team without the chaos often seen in other agile frameworks at that scale. Business Impact : The " Insur -Now" platform was launched on time, enabling the company to roll out new digital products 4x faster than before.

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