# Requirements Specification: {{PROJECT_NAME}}

**Document Version:** 1.0
**Date:** {{DATE}}
**Status:** {{STATUS}}
**Standard Compliance:** ISO/IEC/IEEE 29148:2018

<!-- SCOPE: Functional requirements (FR-XXX-NNN) with MoSCoW prioritization, acceptance criteria, constraints, assumptions, traceability ONLY. -->
<!-- DO NOT add here: NFR (removed completely per project policy), Tech stack → tech_stack.md, Database → database_schema.md, API → api_spec.md, Design system → design_guidelines.md, Operations → runbook.md, Architecture → architecture.md, Implementation → technical_specification.md -->

---

## 1. Introduction

### 1.1 Purpose
This document specifies the functional requirements for {{PROJECT_NAME}}.

### 1.2 Scope
{{PROJECT_SCOPE}}
<!-- Example: E-commerce platform for retail sales. IN SCOPE: Product catalog, shopping cart, checkout, user accounts, order management. OUT OF SCOPE: Warehouse management, shipping logistics, third-party marketplace integration -->

### 1.3 Intended Audience
- Development Team
- QA Team
- DevOps Team
- Technical Writers
- System Architects

### 1.4 References
- Project Charter: {{PROJECT_CHARTER_LINK}}
- Architecture Document: {{ARCHITECTURE_DOC_LINK}}
- Definition of Done: {{DOD_LINK}}

---

## 2. Overall Description

### 2.1 Product Perspective
{{PRODUCT_PERSPECTIVE}}
<!-- Example: Web-based SaaS application replacing legacy desktop system. Interfaces with existing CRM (Salesforce), Payment Gateway (Stripe), Email Service (SendGrid). Deployed on AWS cloud infrastructure -->

### 2.2 User Classes and Characteristics
{{USER_CLASSES}}
<!-- Example: 1. End Customers (tech-savvy, mobile-first, 18-45 age), 2. Admin Users (tech-proficient, desktop, content management), 3. Support Team (moderate tech skills, tickets + reports), 4. API Consumers (developers, programmatic access) -->

### 2.3 Operating Environment
{{OPERATING_ENVIRONMENT}}
<!-- Example: Client: Modern web browsers (Chrome/Firefox/Safari/Edge last 2 versions), Mobile (iOS 14+, Android 10+). Server: AWS (Node.js 18+, PostgreSQL 15, Redis 7), Docker containers, Kubernetes orchestration -->

---

## 3. Functional Requirements

### 3.1 User Management
{{FR_USER_MANAGEMENT}}
<!-- Example: FR-UM-001 (MUST): Users shall register with email+password. FR-UM-002 (MUST): Users shall login with OAuth2 (Google/GitHub). FR-UM-003 (SHOULD): Users shall reset password via email link. FR-UM-004 (MUST): Admins shall manage user roles (Admin/Editor/Viewer) -->

### 3.2 [Feature Group 2]
{{FR_FEATURE_GROUP_2}}
<!-- Example: FR-PC-001 (MUST): System shall display product catalog with search/filter. FR-PC-002 (MUST): Users shall add products to cart. FR-PC-003 (SHOULD): System shall recommend related products -->

### 3.3 [Feature Group 3]
{{FR_FEATURE_GROUP_3}}
<!-- Example: FR-CHK-001 (MUST): Users shall checkout with Stripe payment. FR-CHK-002 (MUST): System shall send order confirmation email. FR-CHK-003 (COULD): Users shall save payment methods for reuse -->

---

## 4. Acceptance Criteria (High-Level)

{{HIGH_LEVEL_ACCEPTANCE_CRITERIA}}
<!-- Example:
1. All MUST functional requirements implemented and passing tests
2. All SHOULD functional requirements reviewed and prioritized
3. All critical user journeys end-to-end tested
4. Acceptance criteria verified for each requirement
5. Traceability matrix complete (FR → Epic → Story → Test Case)
-->

---

## 5. Constraints

### 5.1 Technical Constraints
{{TECHNICAL_CONSTRAINTS}}
<!-- Example: Languages: TypeScript/Node.js (team expertise), Database: PostgreSQL 12 (upgrade planned Q2 2025), Cloud: AWS only (company standard), API: RESTful (no GraphQL this release), Legacy integration: SAP SOAP API (max 10 req/sec) -->

### 5.2 Regulatory Constraints
{{REGULATORY_CONSTRAINTS}}
<!-- Example: GDPR (EU users): Right to erasure, data portability. PCI DSS (payment): Cannot store CVV, encrypted card data. SOC 2: Annual audit required. Data residency: EU data must stay in eu-central-1 region -->

---

## 6. Assumptions and Dependencies

### 6.1 Assumptions
{{ASSUMPTIONS}}
<!-- Example: 1. Users have stable internet (>1 Mbps), 2. Third-party APIs (Stripe, SendGrid) maintain 99.9% uptime, 3. Team size remains 11 people through Year 1, 4. AWS infrastructure scales as needed, 5. Users accept cookies (session management) -->

### 6.2 Dependencies
{{DEPENDENCIES}}
<!-- Example: 1. Stripe API (payment processing), 2. SendGrid API (email delivery), 3. AWS services (ECS, RDS, S3, CloudFront), 4. Salesforce integration (customer sync), 5. DNS provider (Route 53), 6. SSL certificates (ACM) -->

---

## 7. Requirements Traceability

| Requirement ID | Epic | User Story | Test Case | Status |
|---------------|------|------------|-----------|--------|
| FR-UM-001 | Epic-001 | US-001 | TC-001 | {{STATUS}} |
<!-- Example: FR-UM-001 (User Registration) | EP-1 User Management | US-1 Email signup | TC-1 Register with valid email | Implemented -->

---

## 8. Glossary

| Term | Definition |
|------|------------|
| {{TERM_1}} | {{DEFINITION_1}} |
<!-- Example: SLA | Service Level Agreement - contractual uptime commitment (99.9%) | MTTR | Mean Time To Recovery - average time to restore service after failure | p95 | 95th percentile - 95% of requests faster than this value -->

---

## 9. Appendices

### Appendix A: MoSCoW Prioritization Summary
- **MUST have**: {{MUST_COUNT}} requirements
- **SHOULD have**: {{SHOULD_COUNT}} requirements
- **COULD have**: {{COULD_COUNT}} requirements
- **WON'T have (this release)**: {{WONT_COUNT}} requirements
<!-- Example: MUST: 45 (75%), SHOULD: 12 (20%), COULD: 3 (5%), WON'T: 8 (deferred to v2.0) -->

### Appendix B: References
1. ISO/IEC/IEEE 29148:2018 - Systems and software engineering
2. OWASP ASVS (Application Security Verification Standard)
3. WCAG 2.1 (Web Content Accessibility Guidelines)

---

## Maintenance

**Last Updated:** {{DATE}}

**Update Triggers:**
- New functional requirements identified during development
- New constraints or dependencies discovered
- Stakeholder feedback on requirements clarity
- Post-release feedback requiring requirement modifications
- MoSCoW prioritization changes

**Verification:**
- [ ] All FR-XXX-NNN requirements have acceptance criteria
- [ ] All FR-XXX-NNN requirements have MoSCoW priority (MUST/SHOULD/COULD/WON'T)
- [ ] Traceability matrix links requirements to epics/stories
- [ ] No orphaned requirements (all linked to business value)
- [ ] All placeholders replaced with actual content

---

## Revision History

| Version | Date | Author | Changes |
|---------|------|--------|---------|
| 1.0 | {{DATE}} | {{AUTHOR}} | Initial version |

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**Version:** 3.0.0 (BREAKING: NFR sections removed completely per project policy)
**Template Last Updated:** 2025-11-16