System Development Life Cycle (SDLC)

Phases of SDLC

Planning: Define project scope, goals, and deliverables. Identify stakeholders, risks, and timelines.
Analysis: Gather requirements through stakeholder interviews, surveys, and document analysis. Define functional and non-functional requirements.
Design: Create a detailed design specification, including system architecture, user interface, and data models.
Implementation: Write code, conduct unit testing, and integrate components.
Testing: Conduct system testing, including functional, performance, and security testing.
Deployment: Deploy the system to production, conduct user training, and provide ongoing support.
Maintenance: Monitor system performance, fix defects, and implement enhancements.

Waterfall Model: Linear approach, where each phase is completed before moving to the next one.
Agile Model: Iterative approach, where requirements and solutions evolve through collaboration and continuous improvement.
V-Model: Variation of the waterfall model, with testing activities corresponding to each development phase.
Iterative Model: Breaks down the development process into smaller, manageable chunks, with continuous refinement and improvement.

Scrum: Agile framework for managing and completing complex projects, emphasizing teamwork, accountability, and iterative progress.
Kanban: Visual system for managing work, emphasizing continuous flow, limiting work in progress, and maximizing efficiency.
Lean: Philosophy emphasizing elimination of waste, continuous improvement, and maximizing value for customers.

Improved Quality: Systematic approach ensures that requirements are met, and defects are minimized.
Reduced Costs: Early detection and correction of defects reduce rework and costs.
Increased Efficiency: Standardized processes and methodologies improve productivity and efficiency.
Better Stakeholder Management: Clear communication and involvement of stakeholders ensure that expectations are met.

Changing Requirements: Managing changing requirements and scope creep can be challenging.
Stakeholder Management: Coordinating and managing stakeholder expectations can be difficult.
Resource Constraints: Limited resources, including time, budget, and personnel, can impact project success.
Risk Management: Identifying and mitigating risks is crucial to ensure project success.