High Level Design vs Detailed Design vs As-built Documentation

High Level Design vs Detailed Design vs As-built Documentation

  • Illustrative Architecture
  • Customer Requirement Document(CRD)
  • Reference Architecture
  • High Level Design (HLD) – Translates business requirements into a complete architecture design decisions for all key components of the project
  • Detailed Design Document (DDD) – Describes the architecture of each of the key components.
    • Low Level Design(LLD)
    • Network Implementation Plan(NIP)
    • Physical, Logical, Conceptual Diagrams
  • Implementation Plan – Is a Technical Critical Path to the implementation of the technology or services. (Ghant Chart, RACI, Risk Register, Project Tracker, )
  • UAT – Customer based testing and acceptance Criteria.
  • As-built Documentation (ABD) – Provides step-by-step instructions to deployment key components.

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