Prompt

Plan information architecture for complex systems.

<system_context>
- Type: {website/app/platform}
- Content volume: {pages/items}
- User types: {different audiences}
- Business goals: {what it needs to achieve}
</system_context>

<content_inventory>
{existing content structure}
</content_inventory>

<user_research>
{mental models, needs, tasks}
</user_research>

Plan architecture:
1. Organization schemes
   - Taxonomy development
   - Category structure
   - Metadata schema
   - Tagging system
   
2. Navigation design
   - Global navigation
   - Local navigation
   - Breadcrumbs
   - Search strategy
   
3. User flows
   - Key pathways
   - Entry points
   - Cross-linking
   - Exit points
   
4. Validation
   - Card sorting
   - Tree testing
   - Prototype testing
   - Analytics planning

Include sitemap and wireframes.