Case Study: Auditing 11 Websites for Davies & Associates | Ktdigital – Aiden Hoang Nguyen

Davies & Associates, LLC — a U.S. immigration law firm running 11 websites across 8 markets — entered its next growth phase with a classic problem for any multi-site ecosystem: no one was certain which sites were measuring correctly, or which ones were quietly competing with each other. I took on the role of SEO & GEO Consultant, rebuilt the entire measurement infrastructure map, and personally executed the first cross-domain link sprint. Results after Phase 1: 6/6 strategic links went live ahead of the original schedule, and the exact cause of 5 out of 11 sites reporting zero conversions for six straight months was identified.

The Challenge

Davies & Associates operates 11 domains serving 8 different immigration markets — the flagship English-language usimmigrationadvisor.com, plus regional satellite sites (.vn, .sg, .ph, .jp, .co.uk, eb5visaindia.com/.in, globalcitizenshipservices.com, and 2 properties in Italy). After years of expansion, the ecosystem had accumulated more than 20 tools and connectors — GA4, Google Tag Manager, Search Console, SEMrush, Ahrefs, Moz, Cloudflare, plus operational platforms like Google My Business (16 locations), QuickBooks, and LinkedIn Ads — but no single map recording which site connected to which account.

The most concrete consequence: 5 of 11 properties (.co.uk, both GA4 properties for .sg, .ph, .vn) reported zero conversion events for six straight months despite real traffic — nearly half the ecosystem was "blind" to whether customers were actually reaching out. usimmigrationadvisor.vn, the Vietnam market site specifically, had genuinely on-target content (Vietnamese-language guides for EB-5, K-1, green cards) but almost zero clicks across most of its 16-month history — with the cause still unclear: content, technical, or measurement.

The Approach

At this scale of ecosystem, I didn't start by writing new content — I started by building a single source of truth, then diagnosing the real cause before acting. The guiding principle throughout: measure first, fix structure first, rewrite content last — because most of D&A's problems weren't actually about content.

1. Building a Web Estate Registry — a single map for 11 sites

I used Windsor.ai as the central hub, connecting GA4, Search Console, SEMrush, Ahrefs, Moz, and Google PageSpeed for every site simultaneously, then cross-checked against the Cloudflare accounts, hosting, and GTM containers actually running on each page — not just what was documented. The result is a living registry that shows exactly which site is missing which connection.

2. Diagnosing from data, not assumption

Before proposing any change, I pulled 30-day live data plus 6-8 month trends across all 11 sites, cross-referenced against real SERPs (not just tool metrics) to separate "misreporting" from "genuinely not ranking." That process overturned an initial assumption: usimmigrationadvisor.vn looked like a content problem, but turned out to be a link authority problem — Google didn't yet trust the site enough to rank content that was already correctly targeted.

3. Prioritizing the highest-ROI lever first

Instead of spreading effort across all 11 sites at once, I chose the single highest-ROI action first: transferring authority from the flagship .com to .vn through 6 strategic internal links, rather than rewriting content that was already correct. It was the cheapest, fastest, and most immediately measurable move available.

Execution Breakdown

Five main workstreams were executed during the first audit & sprint phase:

1. Registry audit: Inventoried all 11 domains and 20+ tools/connectors, cross-checking the GA4/GTM/Cloudflare/hosting accounts actually running on each site — surfacing several outdated GTM containers to retire and one site double-tagged with two live GTM containers running in parallel on .sg.
2. Cross-site performance report: Pulled 30-day data plus 6-8 month trends via Windsor.ai (GA4 + Search Console) across the full estate, cross-checked against live SERPs to confirm 9 specific issues — from cannibalization across hundreds of EB-5 queries on .com to AI Overview obscuring 4 of 6 core keywords.
3. Root-cause diagnosis for .vn: Confirmed .vn wasn't lacking content but lacking link authority (very low domain authority, only a handful of referring domains) — pivoting the strategy from "rewrite content" to "build links."
4. Deployed 6 inbound links from .com → .vn: Rolled out the first cross-domain link sprint, completing 6/6 ahead of the original schedule; caught and fixed a PHP syntax error on a source page that surfaced mid-rollout.
5. Built a GA4 key-event roadmap: Pinpointed the exact reason 5 sites reported zero conversions — not a lack of traffic, but undefined key events in GA4 even though GTM/GA4 were otherwise running correctly — and handed off a roadmap to enable tracking for .sg, .ph, .vn, .co.uk.

The Results

After the first audit and sprint phase, the D&A ecosystem moved from "no one is certain which site is measuring correctly" to a complete map, a clear diagnosis, and at least one technical fix already live and measurable.

• Web Estate Registry: From no consolidated documentation → a single source of truth for 11 sites and 20+ tools, surfacing several outdated GTM containers to retire
• Cross-domain link sprint (L-1 cluster, .com → .vn): 0/6 → 6/6 links live, completed ahead of the original schedule
• Conversion tracking diagnosis: From "5 sites reporting zero conversions, cause unknown" → exact cause identified across all 5 properties, clearing the path for a remediation roadmap
• usimmigrationadvisor.vn: Confirmed the first-ever 16-month baseline (32 clicks / 3,773 impressions) and corrected the strategy — prioritizing link authority over rewriting content — before committing further content budget