# E-Commerce Platform Development - Phase 2
This document outlines the prioritized tasks for Phase 2 of the e-commerce platform.
## High Priority: Core Features
### 1. Advanced Search & Filtering System
→ **Details**: [search-system.md](search-system.md)
**Overview**: Implement comprehensive product search with multiple filters
- Full-text search with Elasticsearch integration
- Multi-faceted filtering (price, category, brand, ratings)
- Search result ranking algorithm
- Auto-complete and suggestions
- Search analytics and tracking
**Success Criteria**:
- Search results returned in < 200ms
- 95% search accuracy
- Support for 10+ concurrent filter combinations
### 2. Payment Processing Integration
→ **Details**: [payment-integration.md](payment-integration.md)
**Overview**: Secure payment gateway integration with multiple providers
- Stripe primary integration
- PayPal fallback support
- Credit card tokenization
- PCI DSS compliance implementation
- Fraud detection hooks
- Refund and chargeback handling
**Critical Requirements**:
- Zero storage of raw card data
- End-to-end encryption
- Transaction audit logging
- Support for 15+ currencies
### 3. Inventory Management System
→ **Details**: [inventory-system.md](inventory-system.md)
**Overview**: Real-time inventory tracking across warehouses
- Multi-warehouse inventory tracking
- Stock level monitoring with alerts
- Automated reorder triggers
- Inventory reconciliation
- Product variants management
- Stock reservation for pending orders
**Technical Constraints**:
- Real-time sync with < 5s latency
- Handle 100k+ SKUs
- Support for 3+ warehouse locations
## Medium Priority: User Experience
### 4. Recommendation Engine
→ **Details**: [recommendation-engine.md](recommendation-engine.md)
**Overview**: ML-based product recommendation system
- Collaborative filtering implementation
- Content-based filtering
- Real-time recommendation updates
- A/B testing framework
- Performance metrics tracking
**Dependencies**:
- Requires search system (task #1)
- Requires user behavior tracking
### 5. Order Management Workflow
→ **Details**: [order-workflow.md](order-workflow.md)
**Overview**: Complete order lifecycle management
- Order placement and confirmation
- Status tracking and updates
- Shipping integration (UPS, FedEx, USPS)
- Return and exchange processing
- Order history and reprints
**Integration Points**:
- Payment system (task #2)
- Inventory system (task #3)
- Email notification service
## Implementation Notes
**Architecture Decisions**:
- Microservices for payment and inventory
- Event-driven architecture for order updates
- Redis for caching and session management
- PostgreSQL for transactional data
- Elasticsearch for search
**Timeline**: 4-6 months for complete implementation
**Team Size**: 8 engineers (2 per major feature)
**External Dependencies**: Payment provider contracts, shipping API access