Design System Architecture

Help me design the architecture for: [system description]

REQUIREMENTS:
- Must handle: [scale/load requirements]
- Users: [who uses it, how]
- Data: [types, volumes, sensitivity]

CONSTRAINTS:
- Budget: [if relevant]
- Team size: [number of developers]
- Timeline: [when it needs to ship]
- Existing systems: [what we integrate with]

Please provide:
1. High-level architecture diagram (describe in text)
2. Component breakdown
3. Data flow
4. Technology recommendations
5. Tradeoffs in the design
6. Potential scaling challenges