Level 1
• On-page
• Keywords
• Local SEO
• Fixing 404s
• Hx headers
• Guest posting
• Traffic analysis
Level 2
• Long tail
• Reporting
• Rich snippets
• Content briefs
• Technical SEO
• Structured data
• Robots.txt directives
Level 3
• User intent
• XML sitemaps
• Backlink audits
• Indexing strategy
• Competitor analysis
• Mobile optimization
Level 4
• Link building
• URL structure
• Internal linking
• Canonicalization
• Crawling strategy
• Duplicate content
Level 5
• Voice search
• Topic clusters
• Web performance
• Content strategies
• TOFU/MOFU/BOFU
• Core update recovery
Level 6
• Crawl depth
• International SEO
• Website migration
• Server log analysis
• Information architecture
Level 7
• Digital PR
• SSR vs CSR
• Brand signals
• JavaScript SEO
• Featured snippet optimization
Level 8
• PageRank
• Rankbrain
• Penalty recovery
• Redirect management
Level 9
• Automation
• User signals
• NLP optimization
• Programmatic SEO
• Entity oriented search
Level 10
• Semantic SEO
• Authority signals
• Content freshness
• Batch optimized rendering
Level 11
• Topical maps
• Topical coverage
• Topical authority
• Searcher task accomplishment
Level 12
• Content relevance
• Represented queries
• Content configuration
• Representative queries
Level 13
• Historical data
• Knowledge graph
• Semantic distance
• Contextual coverage
Level 14
• Query processing
• Semantic similarity
• Content momentum
• Content responsiveness
Level 15
• Central entity
• Source context
• Macrosemantics
• Supplementary content
Level 16
• Contextual bridge
• Sequence modelling
• Contextual hierarchy
• Contextual relevance
• Microsemantic optimization
Level 17
• Custom LLMs
• Contextual flow
• Contextual border
• Information retrieval
Level 18
• Quality nodes
• Cost of retrieval
• Latent Dirichlet Allocation
Are you going even deeper?
Other articles