# Requirements Document - [Project Name]

**Project**: [Project Name]  
**Date**: [Date]  
**Language**: [language]  
**Version**: 1.0  

## 📋 Document Overview

This document outlines the functional and non-functional requirements for [Project Name]. It serves as the foundation for design decisions and implementation planning.

## 🎯 Project Goals

### Primary Objectives
- [ ] **Goal 1**: [Describe primary objective]
- [ ] **Goal 2**: [Describe secondary objective]
- [ ] **Goal 3**: [Describe tertiary objective]

### Success Metrics
- [ ] **Metric 1**: [Quantifiable success measure]
- [ ] **Metric 2**: [Performance indicator]
- [ ] **Metric 3**: [User satisfaction measure]

## 👥 Stakeholders

| Role | Name | Responsibilities | Contact |
|------|------|------------------|---------|
| Product Owner | [Name] | Requirements definition, acceptance criteria | [email] |
| Technical Lead | [Name] | Architecture decisions, technical feasibility | [email] |
| End Users | [User Group] | Feedback, testing, adoption | [contact method] |

## 🔧 Functional Requirements

### Core Features

#### FR-001: [Feature Name]
- **Description**: [Detailed description of the feature]
- **Priority**: High/Medium/Low
- **User Story**: As a [user type], I want [functionality] so that [benefit]
- **Acceptance Criteria**:
  - [ ] Criterion 1
  - [ ] Criterion 2
  - [ ] Criterion 3
- **Dependencies**: [List any dependencies]
- **Estimated Effort**: [Story points or time estimate]

#### FR-002: [Feature Name]
- **Description**: [Detailed description of the feature]
- **Priority**: High/Medium/Low
- **User Story**: As a [user type], I want [functionality] so that [benefit]
- **Acceptance Criteria**:
  - [ ] Criterion 1
  - [ ] Criterion 2
  - [ ] Criterion 3
- **Dependencies**: [List any dependencies]
- **Estimated Effort**: [Story points or time estimate]

#### FR-003: [Feature Name]
- **Description**: [Detailed description of the feature]
- **Priority**: High/Medium/Low
- **User Story**: As a [user type], I want [functionality] so that [benefit]
- **Acceptance Criteria**:
  - [ ] Criterion 1
  - [ ] Criterion 2
  - [ ] Criterion 3
- **Dependencies**: [List any dependencies]
- **Estimated Effort**: [Story points or time estimate]

### Integration Requirements

#### IR-001: [Integration Point]
- **Description**: [What needs to integrate with what]
- **Interface**: [API, file format, protocol, etc.]
- **Data Format**: [JSON, XML, CSV, etc.]
- **Authentication**: [Required security measures]
- **Error Handling**: [How to handle failures]

## ⚡ Non-Functional Requirements

### Performance Requirements
- **Response Time**: [Maximum acceptable response time]
- **Throughput**: [Requests per second, transactions per minute]
- **Concurrent Users**: [Maximum number of simultaneous users]
- **Data Volume**: [Expected data size and growth]
- **Scalability**: [Horizontal/vertical scaling requirements]

### Security Requirements
- **Authentication**: [Required authentication methods]
- **Authorization**: [Role-based access control requirements]
- **Data Protection**: [Encryption, privacy requirements]
- **Compliance**: [GDPR, HIPAA, SOX, etc.]
- **Audit Trail**: [Logging and monitoring requirements]

### Reliability Requirements
- **Availability**: [Uptime requirements, e.g., 99.9%]
- **Recovery Time**: [Maximum downtime after failure]
- **Backup**: [Data backup and recovery procedures]
- **Fault Tolerance**: [How system handles component failures]

### Usability Requirements
- **User Interface**: [Design standards, accessibility]
- **Learning Curve**: [Time for new users to become productive]
- **Documentation**: [User guides, help systems]
- **Internationalization**: [Multi-language support]

### Compatibility Requirements
- **Browser Support**: [Supported browsers and versions]
- **Operating Systems**: [Windows, macOS, Linux versions]
- **Mobile Devices**: [iOS, Android support]
- **Legacy Systems**: [Backward compatibility requirements]

## 🚫 Constraints and Limitations

### Technical Constraints
- **Technology Stack**: [Required or prohibited technologies]
- **Infrastructure**: [Server, database, cloud platform limitations]
- **Third-party Dependencies**: [External services, libraries]
- **Performance Limits**: [Known bottlenecks or limitations]

### Business Constraints
- **Budget**: [Financial limitations]
- **Timeline**: [Project deadlines and milestones]
- **Resources**: [Team size, skill limitations]
- **Regulatory**: [Legal or compliance restrictions]

### Environmental Constraints
- **Development Environment**: [IDE, tools, processes]
- **Testing Environment**: [Test data, staging systems]
- **Production Environment**: [Deployment constraints]

## 🔄 Change Management

### Requirement Changes
- **Change Process**: [How requirements changes are handled]
- **Approval Authority**: [Who can approve changes]
- **Impact Assessment**: [How to evaluate change impact]
- **Documentation**: [How changes are recorded]

### Version Control
- **Document Versioning**: [How this document is versioned]
- **Change Log**: [Track of all changes made]
- **Review Schedule**: [Regular review intervals]

## ✅ Acceptance Criteria

### Definition of Done
- [ ] All functional requirements implemented
- [ ] All non-functional requirements met
- [ ] Security requirements validated
- [ ] Performance benchmarks achieved
- [ ] User acceptance testing completed
- [ ] Documentation completed
- [ ] Code review passed
- [ ] Deployment successful

### Testing Requirements
- [ ] Unit tests: [coverage percentage]
- [ ] Integration tests: [key scenarios]
- [ ] Performance tests: [load testing]
- [ ] Security tests: [penetration testing]
- [ ] User acceptance tests: [user scenarios]

## 📚 References

### Related Documents
- [Design Specification](design_spec.md)
- [Project Overview](../project_overview.md)
- [Task List](tasks.yaml)

### External References
- [Industry Standards]
- [Regulatory Guidelines]
- [Best Practices Documentation]

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**Document Status**: Draft/Review/Approved  
**Last Updated**: [Date]  
**Next Review**: [Date + 30 days]  
**Approved By**: [Name and Date]