{
  "name": "The Conference Agenda Topic Shift: BrightonSEO 2019-2026",
  "source": "https://www.bestseopodcast.com/conference-agenda-topic-shift",
  "license": "CC BY 4.0",
  "attribution": "The Best SEO Podcast",
  "as_of": "October 2026",
  "conference": "BrightonSEO",
  "method": "Keyword classification of talk titles from published BrightonSEO agendas. 'tool' = AI automating SEO work; 'interface' = optimizing to be visible inside AI answer engines. Title-only classification on both eras: archive-era pages carry abstracts and live-era listings do not, so abstracts are not used anywhere, to keep one instrument across the series. Events with fewer than 20 talks are excluded as non-reportable. See https://www.bestseopodcast.com/conference-agenda-topic-shift#limits for what this cannot show.",
  "counts": {
    "events_harvested": 16,
    "events_reported": 15,
    "talks": 1804,
    "min_talks_per_reported_event": 20,
    "excluded_events": [
      {
        "event": "october-2020",
        "n": 1
      }
    ]
  },
  "findings": {
    "tool_share_min_pct": 2.6,
    "tool_share_max_pct": 9.1,
    "tool_share_mean_pct": 4.8,
    "interface_zero_event_run": 6,
    "interface_zero_run_through": "april-2022",
    "interface_share_last_pct": 21.8,
    "largest_interface_step_pct_points": 12.1,
    "largest_interface_step_event": "october-2025"
  },
  "series": [
    {
      "event": "september-2019",
      "year": 2019,
      "month": 9,
      "instrument": "archive",
      "talks": 89,
      "tool": 5,
      "interface": 0,
      "ai_any": 4,
      "no_theme": 34,
      "tool_pct": 5.6,
      "interface_pct": 0.0,
      "no_theme_pct": 38.2
    },
    {
      "event": "december-2019",
      "year": 2019,
      "month": 12,
      "instrument": "archive",
      "talks": 52,
      "tool": 3,
      "interface": 0,
      "ai_any": 1,
      "no_theme": 25,
      "tool_pct": 5.8,
      "interface_pct": 0.0,
      "no_theme_pct": 48.1
    },
    {
      "event": "april-2020",
      "year": 2020,
      "month": 4,
      "instrument": "archive",
      "talks": 23,
      "tool": 1,
      "interface": 0,
      "ai_any": 0,
      "no_theme": 8,
      "tool_pct": 4.3,
      "interface_pct": 0.0,
      "no_theme_pct": 34.8
    },
    {
      "event": "july-2021",
      "year": 2021,
      "month": 7,
      "instrument": "archive",
      "talks": 96,
      "tool": 3,
      "interface": 0,
      "ai_any": 2,
      "no_theme": 34,
      "tool_pct": 3.1,
      "interface_pct": 0.0,
      "no_theme_pct": 35.4
    },
    {
      "event": "september-2021",
      "year": 2021,
      "month": 9,
      "instrument": "archive",
      "talks": 152,
      "tool": 7,
      "interface": 0,
      "ai_any": 1,
      "no_theme": 46,
      "tool_pct": 4.6,
      "interface_pct": 0.0,
      "no_theme_pct": 30.3
    },
    {
      "event": "april-2022",
      "year": 2022,
      "month": 4,
      "instrument": "archive",
      "talks": 100,
      "tool": 5,
      "interface": 0,
      "ai_any": 1,
      "no_theme": 39,
      "tool_pct": 5.0,
      "interface_pct": 0.0,
      "no_theme_pct": 39.0
    },
    {
      "event": "october-2022",
      "year": 2022,
      "month": 10,
      "instrument": "archive",
      "talks": 123,
      "tool": 9,
      "interface": 1,
      "ai_any": 7,
      "no_theme": 55,
      "tool_pct": 7.3,
      "interface_pct": 0.8,
      "no_theme_pct": 44.7
    },
    {
      "event": "april-2023",
      "year": 2023,
      "month": 4,
      "instrument": "archive",
      "talks": 99,
      "tool": 9,
      "interface": 2,
      "ai_any": 4,
      "no_theme": 31,
      "tool_pct": 9.1,
      "interface_pct": 2.0,
      "no_theme_pct": 31.3
    },
    {
      "event": "september-2023",
      "year": 2023,
      "month": 9,
      "instrument": "live",
      "talks": 165,
      "tool": 8,
      "interface": 1,
      "ai_any": 18,
      "no_theme": 49,
      "tool_pct": 4.8,
      "interface_pct": 0.6,
      "no_theme_pct": 29.7
    },
    {
      "event": "april-2024",
      "year": 2024,
      "month": 4,
      "instrument": "live",
      "talks": 146,
      "tool": 4,
      "interface": 3,
      "ai_any": 22,
      "no_theme": 39,
      "tool_pct": 2.7,
      "interface_pct": 2.1,
      "no_theme_pct": 26.7
    },
    {
      "event": "october-2024",
      "year": 2024,
      "month": 10,
      "instrument": "live",
      "talks": 155,
      "tool": 8,
      "interface": 3,
      "ai_any": 24,
      "no_theme": 39,
      "tool_pct": 5.2,
      "interface_pct": 1.9,
      "no_theme_pct": 25.2
    },
    {
      "event": "april-2025",
      "year": 2025,
      "month": 4,
      "instrument": "live",
      "talks": 118,
      "tool": 6,
      "interface": 3,
      "ai_any": 27,
      "no_theme": 33,
      "tool_pct": 5.1,
      "interface_pct": 2.5,
      "no_theme_pct": 28.0
    },
    {
      "event": "october-2025",
      "year": 2025,
      "month": 10,
      "instrument": "live",
      "talks": 137,
      "tool": 6,
      "interface": 20,
      "ai_any": 41,
      "no_theme": 35,
      "tool_pct": 4.4,
      "interface_pct": 14.6,
      "no_theme_pct": 25.5
    },
    {
      "event": "april-2026",
      "year": 2026,
      "month": 4,
      "instrument": "live",
      "talks": 192,
      "tool": 5,
      "interface": 32,
      "ai_any": 66,
      "no_theme": 45,
      "tool_pct": 2.6,
      "interface_pct": 16.7,
      "no_theme_pct": 23.4
    },
    {
      "event": "october-2026",
      "year": 2026,
      "month": 10,
      "instrument": "live",
      "talks": 156,
      "tool": 4,
      "interface": 34,
      "ai_any": 60,
      "no_theme": 27,
      "tool_pct": 2.6,
      "interface_pct": 21.8,
      "no_theme_pct": 17.3
    }
  ]
}