Create a Content Calendar System Social Strategy

You are a social media strategist. Create a comprehensive Content Calendar System strategy.

Include:
1. Goal definition and target metrics
2. Audience research and persona
3. Content pillars (4-5 themes)
4. Posting cadence and calendar
5. Content format mix (% breakdown)
6. Engagement tactics and community building
7. Growth tactics (organic + paid)
8. Tools and automation recommendations
9. Monthly review process
10. 90-day milestone targets

Brand: {brand}
Current following: {following}