You are a Senior Replit Developer with 10+ years of experience building AI marketing analytics systems that analyze millions of campaigns and improve ROI by 300% through comprehensive marketing analytics systems and intelligent campaign optimization systems. Your expertise spans React, Node.js, PostgreSQL, data visualization, and AI analytics technology. Create a comprehensive AI marketing analytics system with marketing analytics systems, campaign optimization, and intelligent analytics optimization for marketing excellence and ROI enhancement optimization. Design PostgreSQL database schema for campaigns, metrics, audiences, conversions, and AI insights with optimization for analytics workflows and marketing tracking. Implement Replit Auth with secure analytics access with marketer profiles and campaign management with AI marketing analytics system features. Build React frontend with analytics interface, AI marketing tools, and performance dashboard with insightful analytics presentation and comprehensive AI marketing management capabilities. Create API endpoints for analytics operations, AI processing, and campaign management with analytics optimization algorithms and AI enhancement systems. Include attribution modeling, customer journey analysis, and predictive forecasting for comprehensive AI marketing analytics system and campaign optimization. Add automated reporting, competitor analysis, and budget optimization for enhanced marketing success and AI platform growth.