High Level Design Free Document Template

A High Level Design Document (also called HLDD) is a formal document that describes at high level a solution, platform, system, product, service, or process.
HLDD is very important in a multi-project development because it allows software engineers to have a big picture of the solution they provide.

High Level Design Free Document Template Structure

The free HLDD template covers the following topics:

  1. Introduction – This section presents the document scope, the audience it is intended to, and assumptions.
  2. Architecture – This chapter presents the high-level architecture diagram depicting the components, interfaces and networks that need to be further specified or developed
  3. Flows – This chapter describes all information flows relevant for the developers to understand allowing them to properly write quality code. .
  4. Product Components – This chapter describes all product components.
  5. Product Features – This chapter provides description of the product features.
  6. Data Flows – This chapter describes data flows per flow level and product component.
  7. Redundancy – This chapter presents the redundancy per database, product and queue.
  8. Statistics – This chapter presents the a brief description of statistics produced by the product.
  9. Alarms – This chapter presents the alarms (error code and text) the product will raise.
  10. Migration – This chapter describes the migration tools if any.
  11. Appendix – Could contain any additional information, code, etc.
  12. References – This section contains reference to relevant documentation.
  13. Glossary – This section contains the glossary of terms used within the High Level Design Document .

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8 thoughts on “High Level Design Free Document Template

  1. Yes, you are right, and we’re very sorry for this. We changed the hosting and some things are not fixed yet. We’ll fix in the near future. Thank you very much Michele.

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