{
  "publisher": "Search Central Update",
  "operated_by": "Oddtusk",
  "format": "self-declared",
  "version": "1.0",
  "generated": "2026-08-22T09:00:00+05:30",
  "entity_count": 20,
  "entities": [
    {
      "id": "search-central-update",
      "name": "Search Central Update",
      "type": "Organization",
      "tier": 1,
      "definition": "SEO education and tools publisher offering 37 free DataForSEO-powered tools and guides on semantic SEO, AI search optimization, technical SEO, content strategy, and link building.",
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      "relations": [
        {
          "predicate": "OPERATED_BY",
          "target": "oddtusk"
        },
        {
          "predicate": "PUBLISHED_BY",
          "target": "sanjay-ananda-b"
        },
        {
          "predicate": "OFFERS",
          "target": "free-seo-tools"
        },
        {
          "predicate": "COVERS",
          "target": "semantic-seo"
        }
      ],
      "evidence": [
        {
          "quote": "37 free SEO tools powered by live DataForSEO data",
          "source": "https://searchcentralupdate.com/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "sanjay-ananda-b",
      "name": "Sanjay Ananda",
      "type": "Person",
      "tier": 1,
      "definition": "SEO strategist and AEO specialist. Founder of Oddtusk and author of all Search Central Update content.",
      "url": "https://searchcentralupdate.com/about/",
      "sameAs": [
        "https://oddtusk.com/entitymap/",
        "https://twitter.com/sanjayananda_",
        "https://linkedin.com/in/sanjayananda"
      ],
      "relations": [
        {
          "predicate": "FOUNDER_OF",
          "target": "oddtusk"
        },
        {
          "predicate": "AUTHORS",
          "target": "search-central-update"
        }
      ],
      "evidence": [
        {
          "quote": "Built by Sanjay Ananda. All tools free forever.",
          "source": "https://searchcentralupdate.com/ (footer)",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "oddtusk",
      "name": "Oddtusk",
      "type": "Organization",
      "tier": 1,
      "definition": "Digital marketing company founded and managed by Sanjay Ananda, offering SEO services, paid media advertising, and D2C brand scaling.",
      "url": "https://oddtusk.com/",
      "wikidata": "Q140090806",
      "sameAs": [
        "https://oddtusk.com/entitymap/"
      ],
      "relations": [
        {
          "predicate": "OPERATES",
          "target": "search-central-update"
        },
        {
          "predicate": "FOUNDED_BY",
          "target": "sanjay-ananda-b"
        }
      ],
      "evidence": [
        {
          "quote": "Oddtusk, Founded & managed by Sanjay",
          "source": "https://searchcentralupdate.com/ (footer)",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "free-seo-tools",
      "name": "37 Free SEO Tools",
      "type": "Product",
      "tier": 1,
      "definition": "Suite of 37 browser-based SEO tools covering rank checking, AI visibility, backlink analysis, site speed, schema generation, and keyword research, powered by live DataForSEO data.",
      "url": "https://searchcentralupdate.com/tools/",
      "relations": [
        {
          "predicate": "OFFERED_BY",
          "target": "search-central-update"
        },
        {
          "predicate": "DEPENDS_ON",
          "target": "dataforseo"
        }
      ],
      "evidence": [
        {
          "quote": "29 Free SEO Tools... expanded to 37",
          "source": "https://searchcentralupdate.com/tools/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "dataforseo",
      "name": "DataForSEO",
      "type": "Platform",
      "tier": 2,
      "definition": "SEO data API provider supplying live SERP, keyword, backlink, and on-page data.",
      "url": "https://dataforseo.com/",
      "relations": [
        {
          "predicate": "POWERS",
          "target": "free-seo-tools"
        }
      ],
      "evidence": [
        {
          "quote": "powered by live DataForSEO data",
          "source": "https://searchcentralupdate.com/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "semantic-seo",
      "name": "Semantic SEO",
      "type": "Concept",
      "tier": 2,
      "definition": "SEO discipline that optimizes for meaning: entities, attributes, relationships, topical maps, and search intent rather than isolated keywords.",
      "url": "https://searchcentralupdate.com/semantic-seo/",
      "wikidata": "Q138974568",
      "relations": [
        {
          "predicate": "RELATES_TO",
          "target": "entity-seo"
        },
        {
          "predicate": "ENABLES",
          "target": "topical-authority"
        },
        {
          "predicate": "COVERED_BY",
          "target": "search-central-update"
        }
      ],
      "evidence": [
        {
          "quote": "Semantic SEO hub covering entities, topical maps, and the knowledge graph",
          "source": "https://searchcentralupdate.com/semantic-seo/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "entity-seo",
      "name": "Entity SEO",
      "type": "Concept",
      "tier": 2,
      "definition": "Optimization approach centered on named entities, their attributes (EAV model), salience, and Knowledge Graph representation.",
      "url": "https://searchcentralupdate.com/entity-based-seo/",
      "relations": [
        {
          "predicate": "PART_OF",
          "target": "semantic-seo"
        },
        {
          "predicate": "DEPENDS_ON",
          "target": "google-knowledge-graph"
        }
      ],
      "evidence": [
        {
          "quote": "Entity-Based SEO Guide",
          "source": "https://searchcentralupdate.com/entity-based-seo/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "aeo",
      "name": "Answer Engine Optimization (AEO)",
      "type": "Concept",
      "tier": 2,
      "definition": "Optimizing content to be selected as the direct answer by answer surfaces: AI Overviews, featured snippets, voice assistants, and AI chatbots.",
      "url": "https://searchcentralupdate.com/answer-engine-optimization/",
      "relations": [
        {
          "predicate": "SUBSUMED_BY",
          "target": "geo",
          "note": "Google's Knowledge Graph resolves the query 'answer engine optimization' to the GEO entity"
        }
      ],
      "evidence": [
        {
          "quote": "Knowledge Graph lookup for 'answer engine optimization' returned entity kg:/g/11md5185sw (Generative engine optimization)",
          "source": "Google Knowledge Graph Search API, retrieved 2026-08-09",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "geo",
      "name": "Generative Engine Optimization (GEO)",
      "type": "Concept",
      "tier": 2,
      "definition": "The practice of structuring digital content and managing online presence to improve visibility in responses generated by generative AI systems.",
      "url": "https://searchcentralupdate.com/generative-engine-optimization-guide/",
      "kgmid": "kg:/g/11md5185sw",
      "sameAs": [
        "https://en.wikipedia.org/wiki/Generative_engine_optimization"
      ],
      "relations": [
        {
          "predicate": "RELATES_TO",
          "target": "aeo"
        },
        {
          "predicate": "MEASURED_BY",
          "target": "free-seo-tools"
        }
      ],
      "evidence": [
        {
          "quote": "Generative engine optimization is the practice of structuring digital content... (Knowledge Graph detailed description)",
          "source": "Google Knowledge Graph, kg:/g/11md5185sw",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "topical-authority",
      "name": "Topical Authority",
      "type": "Concept",
      "tier": 2,
      "definition": "A site's earned status as the comprehensive source on a knowledge domain, built through complete topical coverage, entity depth, and interlinked content networks.",
      "url": "https://searchcentralupdate.com/topical-authority-seo/",
      "relations": [
        {
          "predicate": "BUILT_VIA",
          "target": "topical-map"
        },
        {
          "predicate": "PART_OF",
          "target": "semantic-seo"
        }
      ],
      "evidence": [
        {
          "quote": "Topical Authority Guide",
          "source": "https://searchcentralupdate.com/topical-authority-seo/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "topical-map",
      "name": "Topical Map",
      "type": "Methodology",
      "tier": 2,
      "definition": "A structured plan of every page a site needs to cover a knowledge domain: clusters, hubs, spokes, queries, entities, and interlinks, bounded by the domain border.",
      "url": "https://searchcentralupdate.com/semantic-seo/",
      "relations": [
        {
          "predicate": "PRODUCES",
          "target": "topical-authority"
        }
      ],
      "evidence": [
        {
          "quote": "117-node evidence-backed topical map governs this site's architecture",
          "source": "https://searchcentralupdate.com/entitymap/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "google-knowledge-graph",
      "name": "Google Knowledge Graph",
      "type": "System",
      "tier": 2,
      "definition": "Google's entity database powering Knowledge Panels and entity understanding in Search, storing entities, attributes, and relationships.",
      "url": "https://searchcentralupdate.com/semantic-seo/",
      "relations": [
        {
          "predicate": "VERIFIES",
          "target": "entity-seo"
        }
      ],
      "evidence": [
        {
          "quote": "Knowledge Panel Checker queries live SERPs for knowledge_graph result items",
          "source": "https://searchcentralupdate.com/tools/entity-checker/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "llms-txt",
      "name": "llms.txt",
      "type": "Standard",
      "tier": 2,
      "definition": "Proposed markdown standard by Jeremy Howard (Answer.AI, September 2024) placed at /llms.txt to curate a site's content for large language model consumption.",
      "url": "https://searchcentralupdate.com/ai-search/llms-txt/",
      "relations": [
        {
          "predicate": "IMPLEMENTED_BY",
          "target": "search-central-update",
          "note": "live at https://searchcentralupdate.com/llms.txt"
        }
      ],
      "evidence": [
        {
          "quote": "llms.txt, The Complete Guide to the AI Content Standard",
          "source": "https://searchcentralupdate.com/ai-search/llms-txt/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "core-web-vitals",
      "name": "Core Web Vitals",
      "type": "Standard",
      "tier": 2,
      "definition": "Google's page experience metrics: LCP (under 2.5s), CLS (under 0.1), and INP (under 200ms, replaced FID in 2024).",
      "url": "https://searchcentralupdate.com/technical-seo/",
      "relations": [
        {
          "predicate": "MEASURED_BY",
          "target": "free-seo-tools",
          "note": "Website Speed Test tool runs full Lighthouse audits"
        }
      ],
      "evidence": [
        {
          "quote": "Full Google Lighthouse audit... Core Web Vitals",
          "source": "https://searchcentralupdate.com/tools/website-speed-test/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "link-building",
      "name": "Link Building",
      "type": "Concept",
      "tier": 2,
      "definition": "Earning hyperlinks from external websites to build link authority, measured by referring domains and link-based scores such as Domain Rank (0-1000).",
      "url": "https://searchcentralupdate.com/link-building/",
      "relations": [
        {
          "predicate": "MEASURED_BY",
          "target": "domain-rank"
        },
        {
          "predicate": "COVERED_BY",
          "target": "search-central-update"
        }
      ],
      "evidence": [
        {
          "quote": "Link Building: The Complete Guide to Earning Authority in the AI Search Era",
          "source": "https://searchcentralupdate.com/link-building/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "domain-rank",
      "name": "Domain Rank",
      "type": "Metric",
      "tier": 2,
      "definition": "DataForSEO's 0-1000 link authority score based on referring domain quantity and quality, comparable in purpose to Moz DA and Ahrefs DR.",
      "url": "https://searchcentralupdate.com/link-building/domain-authority/",
      "relations": [
        {
          "predicate": "COMPUTED_BY",
          "target": "dataforseo"
        }
      ],
      "evidence": [
        {
          "quote": "rank values on a 0-1,000 scale based on referring domains",
          "source": "https://searchcentralupdate.com/tools/domain-authority-checker/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "content-decay",
      "name": "Content Decay",
      "type": "Concept",
      "tier": 3,
      "definition": "The gradual traffic and ranking loss of aging content as freshness fades, competitors publish, and search intent shifts; countered by scheduled refresh cycles.",
      "url": "https://searchcentralupdate.com/content-decay-recovery/",
      "relations": [
        {
          "predicate": "DETECTED_BY",
          "target": "free-seo-tools",
          "note": "Content Decay Detector tool"
        },
        {
          "predicate": "MITIGATED_BY",
          "target": "search-central-update",
          "note": "daily publishing routine includes decay refresh"
        }
      ],
      "evidence": [
        {
          "quote": "Content Decay Recovery guide and Content Decay Detector tool",
          "source": "https://searchcentralupdate.com/content-decay-recovery/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "eeat",
      "name": "E-E-A-T",
      "type": "Concept",
      "tier": 3,
      "definition": "Google's quality framework: Experience, Expertise, Authoritativeness, and Trustworthiness, evaluated through author entities, credentials, and consistent authorship.",
      "url": "https://searchcentralupdate.com/content-strategy/",
      "relations": [
        {
          "predicate": "SIGNALLED_BY",
          "target": "sanjay-ananda-b",
          "note": "consistent Person schema authorship across all pages"
        }
      ],
      "evidence": [
        {
          "quote": "author Person Sanjay Ananda on every article schema",
          "source": "https://searchcentralupdate.com/ (site-wide JSON-LD)",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "bhubaneswar",
      "name": "Bhubaneswar",
      "type": "Place",
      "tier": 1,
      "definition": "City in Odisha, India; operating base of Oddtusk.",
      "relations": [
        {
          "predicate": "LOCATION_OF",
          "target": "oddtusk"
        }
      ],
      "evidence": [
        {
          "quote": "Bhubaneswar listed as a Place entity in the Oddtusk entity map",
          "source": "https://oddtusk.com/entitymap/",
          "retrieved": "2026-08-09"
        }
      ]
    },
    {
      "id": "keyword-clustering",
      "name": "Keyword Clustering",
      "type": "Concept",
      "tier": 2,
      "definition": "The process of grouping semantically related search queries into topic clusters so that each page in a site's architecture targets a distinct intent group, preventing keyword cannibalisation and building topical authority.",
      "url": "https://searchcentralupdate.com/semantic-seo/keyword-clustering/",
      "relations": [
        {
          "predicate": "PART_OF",
          "target": "semantic-seo"
        },
        {
          "predicate": "FEEDS_INTO",
          "target": "topical-authority"
        }
      ],
      "evidence": [
        {
          "quote": "Keyword clustering groups semantically related queries into content topics.",
          "source": "https://searchcentralupdate.com/semantic-seo/keyword-clustering/",
          "retrieved": "2026-08-22"
        }
      ]
    }
  ]
}