4.1 Hierarchical link structure
4.1.1 Homepage → category → subcategory → product
Homepage distributes authority to primary categories Category pages aggregate products, filters, and subcategory navigation Subcategory pages refine by brand, size, material, and price Product pages are terminal nodes with contextual outbound links 4.1.2 Cross-category navigation (workflow clusters)
4.1.3 Brand-centric linking hubs
Purpose: consolidate manufacturer content into brand archive pages and distribute relevance. 4.2 Contextual internal linking
4.2.1 Product-to-product recommendations
4.2.2 Usage-based linking (glass)
Bong → pre-coolers (filtration enhancement) Pre-cooler → bowls matching joint size (compatibility) Bowls → screens/adapters (customization) Any glass → cleaning supplies (maintenance) 4.2.3 Price-tier navigation
Entry-level → mid-range upgrade prompts Mid-range → budget alternative or premium upgrade Premium → collector / exclusive tier 4.3 Technical implementation notes
4.3.1 Breadcrumb optimization
Pattern: Home > Category > Subcategory > Product Clickable segments (except current page) Mobile truncation for long product names 4.3.2 Footer & sidebar placement
4.3.3 Anchor text variation targets
Branded / generic: 20–30%