SEI SEO + AEO SUCCESS CASE STUDY

How an enterprise financial-services website transformed organic visibility, indexing performance, and AI discoverability

  • 128K
    ACTIVE USERS
    +204.1%
  • 29,728
    GOOGLE ORGANIC USERS
    +131.9%
  • 36,533
    ORGANIC CAMPAIGN USERS
    +126.0%
  • 94/100
    CHATGPT KNOWLEDGE SCORE
    WAIKAY

Executive Summary

SEI partnered with GreenBanana SEO to improve the discoverability of a large, complex, multi-region enterprise website across traditional search engines and emerging AI answer platforms. The engagement combined content creation, PR-driven authority building, display-supported audience generation, AEO/GEO writing, structured data, internal linking, and hands-on technical collaboration with SEI’s internal Drupal development team.

The result was not a single-channel lift. It was a broad improvement in organic acquisition, engaged traffic, indexability, technical health, and the degree to which leading AI systems accurately understand and cite SEI. The success also generated internal confidence: based on the results and stakeholder feedback, additional SEI divisions engaged GreenBanana for expanded work.

  • +131.9%
    GOOGLE ORGANIC USERS
    29,728 vs. 12,818
  • +136.3%
    GOOGLE ORGANIC NEW USERS
    28,369 vs. 12,006
  • +197.5%
    ORGANIC ENGAGED SESSIONS
    51,486 vs. 17,306
  • +77.4%
    ORGANIC KEY EVENTS
    1,955 vs. 1,102

 

The central lesson

Enterprise SEO and AEO succeed when content, crawlability, site architecture, authority, and machine-readable clarity are treated as one operating system—not as separate tactics

 

At a Glance

Client SEI (seic.com), a global financial-services and technology company
Primary challenge Large multi-region Drupal ecosystem, indexing exclusions, fragmented internal linking, duplicate/canonical complexity, and rapidly changing AI-discovery requirements
GreenBanana scope SEO strategy, AEO/GEO content, technical guidance, content prioritization, internal linking, schema, digital PR/link building, and implementation support
Measurement GA4, Google Search Console/Core Web Vitals, Semrush, Ahrefs, and WAIKAY
Outcome Substantial year-over-year organic growth, strong technical health, hundreds of AI-cited pages, and high cross-model knowledge accuracy

 

The Challenge: Make a Complex Enterprise Site Searchable, Indexable, and AI-Readable

SEI’s website was not suffering from one isolated SEO problem. Its scale, regional structure, content inventory, governance model, and Drupal implementation created a network of interdependent issues. GreenBanana’s role was to help SEI make better decisions at page, template, business-unit, and enterprise levels—while working directly with internal developers and stakeholders.

  • Indexing complexity: large sets of URLs were crawled but not indexed, unknown to Google, duplicated, or competing through unclear canonical signals.
  • Enterprise content sprawl: thousands of pages, PDFs, newsroom items, insight articles, biographies, regional content, and utility pages required triage rather than blanket deletion or rewriting.
  • Internal-link fragmentation: strategically important pages needed stronger contextual links and clearer topic-hub relationships.
  • Multi-region governance: cloned regional Drupal nodes required deliberate canonical, hreflang, localization, and quality-assurance rules.
  • AI-search transition: SEI needed content that could be extracted, understood, and cited by ChatGPT, Gemini, Claude, Google AI Overviews, and AI Mode—not merely ranked as a blue link.

Evidence of the Operational Depth

The work products show an enterprise operating model rather than a lightweight audit:

  • 242-URL indexation value matrix separating high-value pages from low-risk cleanup candidates; 4 URLs carried direct backlink signals and required preservation or careful redirection.
  • 250 prioritized internal-link recommendations: 82 Tier 1, 133 Tier 2, and 35 Tier 3 opportunities, plus a 497-item qualified backlog.
  • Wave-based page prioritization and enterprise content-decision frameworks covering hundreds of near-term pages and a filtered backlog exceeding 2,400 records.
  • A documented regional-cloning standard covering canonicals, reciprocal hreflang, valid locale codes, indexation classifications, localized value, and pre/post-launch QA.
  • A practical SEO+AEO publishing standard requiring answer-first openings, substantive H2/H3 structure, natural keyword variation, FAQs, internal linking, and applicable schema.

Risk-managed SEO

The team did not treat every “not indexed” URL as equally valuable. It combined indexation status with backlinks, content type, business ownership, compliance needs, and search intent to decide what to preserve, improve, redirect, consolidate, or retire.

The Integrated Strategy

1. Technical SEO and Indexation Recovery

GreenBanana worked alongside SEI’s internal web-development team to diagnose crawl and indexation barriers, clarify canonical behavior, improve discoverability, and turn large URL inventories into prioritized implementation queues.

2. Content Engineered for SEO, AEO, and GEO

Content was structured for both human readers and machine extraction: direct answers near headings, comprehensive topical coverage, FAQs, clear entity naming, natural keyword variations, and schema where applicable.

3. Site Architecture and Internal Linking

A prioritized interlinking model connected relevant pages, reinforced topic hubs, reduced orphaning, and moved valuable content closer to users and crawlers.

4. Digital PR and Authority Building

PR link building strengthened external validation and authority. Backlink signals were incorporated into indexation and content-retirement decisions so valuable equity was not accidentally discarded.

5. Multi-Region Governance

GreenBanana created implementation rules for regional duplication, canonicals, hreflang, locale targeting, localized content, and Drupal QA—helping SEI scale regional content without creating avoidable search ambiguity.

6. Multi-Source AI Visibility Measurement

Because no accepted gold standard exists for AI-search reporting, GreenBanana triangulated Ahrefs, Semrush, and WAIKAY rather than presenting a single vendor’s metric as definitive.

Example of an optimized SEI service page: clear audience targeting, descriptive headings, answer-oriented sections, internal content modules, and conversion paths.

 

Results: Organic Growth at Enterprise Scale

  • 29,728
    GOOGLE ORGANIC USERS
    +131.92% YoY
  • 28,369
    GOOGLE ORGANIC NEW USERS
    +136.29% YoY
  • 7,581
    RETURNING USERS
    +111.76% YoY
  • 1,187
    KEY EVENTS
    +107.16% YoY
GA4 User acquisition table comparing google/organic and bing/organic first-user source/medium, May 7-Aug 4 2026 vs. 2025
GA4 first-user source/medium comparison, May 7-August 4, 2026 versus the same period in 2025.

Google organic growth was not limited to traffic volume. Events attributed to Google organic increased 166.74%, and engaged sessions per active user rose 42.03%. Average engagement time declined, which should be monitored and segmented by page type; however, the simultaneous growth in engaged sessions and key events indicates that the campaign produced substantially more meaningful activity overall.

Bing Organic Reinforced the Pattern

Bing organic users increased 138.44%, new users increased 146.93%, returning users increased 114.88%, event volume rose 191.73%, and key events increased approximately 99.21%. The cross-engine consistency reduces the likelihood that the result was caused by a single Google-specific anomaly.

GA4 Active users by Session campaign over time, organic row showing 36,533 active users, 58,141 sessions, 51,486 engaged sessions, 1,955 key events
GA4 organic campaign view: 36,533 active users, 58,141 sessions, 51,486 engaged sessions, and 1,955 key events.

 

Results: Technical Health Supported the Growth

  • 883
    GOOD MOBILE URLS
    0 poor
  • 892
    GOOD DESKTOP URLS
    0 poor
  • 9
    MOBILE URLS NEED IMPROVEMENT
    ~1% of measured URLs
  • 0
    DESKTOP URLS NEED IMPROVEMENT
    at capture
Google Search Console Core Web Vitals: Mobile 883 good URLs, 9 need improvement, 0 poor; Desktop 892 good URLs, 0 need improvement, 0 poor
Google Search Console Core Web Vitals snapshot: strong mobile and desktop coverage with no poor URLs.

The Core Web Vitals snapshot shows that nearly the entire measured URL set qualified as “good” on both mobile and desktop. This matters because the SEO/AEO program was not being asked to overcome a broadly degraded technical experience. Content and authority gains were supported by a stable performance foundation.

 

Indexation Became a Managed Business Process

GreenBanana converted indexation exclusions into decision-ready inventories. In the corrected 242-URL base, 238 URLs were classified as low SEO risk while 4 carried direct backlink signals and were flagged as high SEO value. The matrix categorized 67 PDFs, 62 insight/commentary pages, 51 newsroom releases, 22 leadership pages, and other business, regional, conversion, and corporate content types. This made it possible to preserve valuable equity while accelerating cleanup decisions elsewhere.

Why this matters

Large enterprises rarely win by trying to “force index” every URL. They win by making deliberate choices about which pages deserve independent visibility, which should consolidate, and which should be retired without destroying authority or user value.

 

Results: SEI Became More Visible and Better Understood by AI Systems

  • 343
    AI OVERVIEW APPEARANCES
    Ahrefs, +175
  • 43
    CHATGPT APPEARANCES
    Ahrefs, +32
  • 399
    CHATGPT-CITED PAGES
    Semrush dataset
  • 94/100
    CHATGPT KNOWLEDGE SCORE
    WAIKAY
Ahrefs AI responses overview for seic.com: 343 AI Overview appearances (+175) across 160 pages, 43 ChatGPT appearances (+32) across 44 pages
Ahrefs AI-response visibility: 343 AI Overview appearances across 160 pages and 43 ChatGPT appearances across 44 pages.
Semrush AI visibility trend for seic.com across ChatGPT, AI Overview, AI Mode, and Gemini, all time
Semrush AI visibility trend across ChatGPT, Google AI Overviews, AI Mode, and Gemini.
Semrush distribution of cited pages by LLM: ChatGPT 399 (56.3%), AI Overview 205 (28.9%), AI Mode 188 (26.5%), Gemini 43 (6.1%)
Semrush distribution of cited pages by LLM: ChatGPT 399, AI Overview 205, AI Mode 188, and Gemini 43.

Cross-Model Knowledge Accuracy

WAIKAY’s site-to-model overlap testing showed that major AI systems had a strong, consistent understanding of SEI’s identity, services, audiences, and business model. Scores ranged from 88 to 94 across the tested systems.

  • 94
    CHATGPT
    knowledge score
  • 93
    GEMINI GROUNDED
    knowledge score
  • 91
    GEMINI
    knowledge score
  • 88
    CLAUDE
    knowledge score

 

WAIKAY AI Knowledge Score for www.seic.com, ChatGPT model, retrieved 2026-08-05: 94/100, 94% overlap between website topics and LLM response
ChatGPT: 94/100
WAIKAY AI Knowledge Score for www.seic.com, Gemini model, retrieved 2026-08-05: 91/100, 91% overlap between website topics and LLM response
Gemini: 91/100
WAIKAY AI Knowledge Score for www.seic.com, Gemini-grounded model, retrieved 2026-08-05: 93/100, 93% overlap between website topics and LLM response
Gemini-grounded: 93/100
WAIKAY AI Knowledge Score for www.seic.com, Claude model, retrieved 2026-08-05: 88/100, 88% overlap between website topics and LLM response
Claude: 88/100

 

These scores do not prove that every commercial query will surface SEI, nor are they directly interchangeable with rankings or conversions. They do show that the company’s owned content and public signals provide AI systems with a coherent, accurate representation of the organization—a prerequisite for reliable citation and recommendation.

 

Business Impact Beyond the Dashboard

1. Organic acquisition more than doubled

The campaign generated major year-over-year gains in users, new users, sessions, engaged sessions, events, and key events. This is the clearest evidence that technical and content improvements translated into measurable audience growth.

2. SEI built an enterprise search operating model

The engagement produced reusable standards, prioritization systems, QA controls, and ownership frameworks. Those systems can be applied across divisions, regions, page templates, and future site releases.

3. AI visibility became measurable—not anecdotal

SEI can now see its footprint across AI Overviews, AI Mode, ChatGPT, Gemini, and Claude using multiple independent measurement systems. This creates a baseline for future optimization and guards against overreliance on any single vendor methodology.

4. Internal confidence expanded the relationship

The strongest proof of success was organizational: positive results and feedback led additional SEI divisions to engage GreenBanana. The campaign moved from a marketing initiative toward a broader enterprise capability.

What GreenBanana delivered

Not simply more traffic: a repeatable framework for deciding what to publish, what to fix, how to connect it, how to localize it, how to mark it up, and how to measure whether both search engines and AI systems understand it.

 

Representative Deliverables

  • AEO/GEO content and service-page optimization
  • SEO+AEO editorial standards and answer-first writing guidance
  • Schema recommendations and machine-readable content structure
  • 242-URL indexation value prioritization matrix
  • 250-item internal-link implementation plan plus qualified backlog
  • Enterprise and business-unit content decision queues
  • Regional cloning, canonical, and hreflang operating standard
  • Direct implementation collaboration with SEI’s Drupal development team
  • PR link building and authority preservation recommendations
  • Multi-platform AI visibility reporting and knowledge-score baselines

Measurement Notes and Responsible Interpretation

This case study uses the screenshots and work products supplied for the engagement. Unless noted otherwise, GA4 comparisons cover May 7-August 4, 2026 versus May 7-August 4, 2025.

Why three AI reporting systems were used

AI visibility measurement is still an emerging discipline. Query sets, retrieval methods, location, personalization, model versions, citation definitions, and sampling frequency vary by vendor. GreenBanana therefore used Ahrefs, Semrush, and WAIKAY to triangulate performance. The platforms should be read as complementary indicators, not as three perfectly comparable scorecards.

Attribution limitations

The engagement combined content, technical changes, PR authority, internal linking, schema, display-supported traffic, and developer collaboration. The supplied reporting does not isolate the incremental contribution of each tactic.

  • Year-over-year growth can also be affected by brand demand, market conditions, campaigns, site releases, analytics configuration, and changes in user behavior.
  • Average engagement time declined in several organic-source comparisons even while engaged sessions, events, and key events increased. Page-level and audience-level analysis should continue.
  • AI knowledge scores measure overlap and understanding; they are not equivalent to revenue, share of voice for every query, or guaranteed inclusion in an AI answer.

 

Conclusion

SEI’s results demonstrate what modern enterprise search optimization looks like in practice. Traditional SEO, technical governance, content strategy, structured data, authority building, and AI answer optimization were managed as a single system. That system produced substantial organic growth, excellent technical health, hundreds of AI citations, and a coherent representation of SEI across leading models.

 

Source Materials Reviewed

  • GA4 Reports Snapshot and acquisition comparisons supplied August 5, 2026.
  • Google Search Console Core Web Vitals screenshot supplied August 5, 2026.
  • Ahrefs AI Responses overview supplied August 5, 2026.
  • Semrush AI Visibility and Distribution by LLM screenshots supplied August 5, 2026.
  • WAIKAY model-knowledge reports for ChatGPT, Gemini, Gemini-grounded, and Claude supplied August 5, 2026.
  • SEIC CNI SEO Value Prioritization – Corrected 242-URL Base.
  • SEI Enterprise Interlinking Prioritization workbook.
  • SEIC Wave 1 – 250 Priority Pages workbook.
  • SEIC Content Decisions Enterprise workbook.
  • SEO + AEO Blog Post Cheat Sheet, July 2026.
  • Regional Page Cloning and Google Search best-practice brief, July 23, 2026.
  • Custody for Financial Advisors optimized page example.