Business to Build Requirements Explained: Functional vs Non-Functional

Описание: Business requirements to build requirements explained: how to turn a business goal into functional requirements and infrastructure (non-functional) requirements a team can build.
A business requirement says what the business wants to achieve. A build requirement says what the system must do and what it must run on to achieve that goal reliably.

This visual lesson is for developers, architects, business analysts, and product owners who hand requirements to a build team. It walks through a user login requirement, measurable scale and latency targets, and a full AI document assistant example, then shows why missing infrastructure requirements cause production incidents.

What you will learn:
• Functional vs infrastructure (non-functional) requirements
• How to write a functional requirement with business rules and Given / When / Then acceptance criteria
• How constraints such as cloud, database, GDPR, and region shape a design
• How to make scale and latency measurable (users, requests per second, p95)
• How availability, security, location, and cost targets change the architecture
• A worked example: an AI document assistant from one sentence to build-ready requirements
• Why every feature can work and production can still fail
• Ten questions to answer before handing requirements to the build team

CHAPTERS
00:00 From business requirement to build requirement
00:36 Functional vs infrastructure requirements
01:16 Writing a functional requirement: user login and acceptance criteria
01:56 Constraints the team cannot freely change
02:30 Measurable scale and latency requirements (p95)
03:17 Availability, security, location, and cost
04:01 AI document assistant: features and business rules
04:42 AI document assistant: infrastructure requirements
05:22 Why missing infrastructure requirements cause production incidents
06:01 Ten questions before handing off to the build team

Memory rule:
Business requirement = why
Functional requirement = what
Infrastructure requirement = under what conditions
Technical design = how

Subscribe to Core Concept Learning for clear, visual explanations of AI and software engineering concepts.

#SoftwareRequirements #SoftwareEngineering #SystemDesign