Migrate your site.Keep your rankings.
You are replatforming, redesigning, or moving domains. You also know that one missed redirect or one structural mistake can erase years of SEO equity overnight. BLKDG provides seo migration services that map every URL, verify every redirect, and monitor every ranking so the traffic you built follows you to the new site from day one.
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BLKDG provides seo migration services for businesses replatforming to Shopify, launching a new CMS, moving domains, or executing a full site redesign. We handle the work that determines whether your migration preserves traffic or destroys it: URL inventory, one-to-one redirect mapping, canonical strategy, structured data migration, XML sitemap management, and post-launch indexation monitoring. Every migration we have executed has delivered zero organic traffic loss because we treat every URL change as an SEO decision, not a development task.
The difference between a migration that preserves traffic and one that destroys it is decided before a single line of code is deployed.
Every replatform, every redesign, every domain change is a moment where years of SEO equity are on the line. The URLs that rank. The backlinks that point to them. The structured data that earns rich results. The internal linking architecture that tells search engines which pages matter most. All of it hangs on whether someone planned the migration with SEO as the starting point or treated it as a cleanup task after launch.
Most migrations are handled by developers. Good developers. But developers whose job is building the new site, not preserving the old one. They change URL structures because the new platform has different conventions. They skip redirects for pages that look unimportant. They launch without verifying that canonical tags, sitemaps, and robots directives carried over correctly. And nobody notices until three weeks later when Search Console lights up with errors and organic traffic is in free fall.
The villain is not the migration itself. It is the assumption that SEO will sort itself out after launch. It never does. By the time the traffic drop is visible in your analytics, the damage is weeks old and the recovery timeline is measured in months.
Why most site migrations tank rankings
The agencies and dev shops that botch migrations treat them as a build project with an SEO checklist stapled to the end. They launch the new site, realize 2,000 URLs changed, scramble to write redirects, miss half of them, and then blame Google for a "reindexation delay." There is no reindexation delay. There is an incomplete redirect map and a migration that was planned around design and development milestones instead of SEO preservation milestones.
What your dev team is not thinking about during the migration
Your developers are focused on the new site working correctly. That is their job. But they are not thinking about which pages carry the most backlink equity, whether the new URL structure breaks internal linking patterns, whether canonical tags are pointing correctly across the new architecture, or whether the XML sitemap reflects the new URL hierarchy. Those are SEO decisions that need to be made before the new site is built, not after it launches.
There is a way to replatform, redesign, or move domains without losing a single ranking. It starts with treating SEO as the migration plan, not an afterthought.
We have executed migrations across Shopify, WordPress, headless architectures, and custom platforms with zero organic traffic loss. Every one started with the URL map.
SEO Migration Services by an Agency That Has Never Lost a Ranking
We have seen businesses lose 40% of their organic traffic to migrations that were technically successful. The new site worked. The old rankings did not come with it. That is the gap we exist to close.
BLKDG is a full-service SEO agency that treats every migration as an SEO project first and a development project second. We do not hand your dev team a redirect spreadsheet and hope for the best. We build the complete URL map, write the redirect rules, validate canonical strategy, migrate structured data, and monitor indexation through launch and for 90 days after.
Our team includes SEO engineers who work directly alongside your developers or ours. The people planning the SEO migration are the same people verifying it in staging, testing it at launch, and monitoring it in production. No handoffs between an SEO team and a dev team. No gap where redirects fall through.
Audit. Migrate. Monitor. The Only Process That Preserves Traffic.
Pre-Migration Audit and URL Mapping
Before anything moves, we run a complete technical SEO audit of your existing site. Every URL is inventoried. Every page is evaluated for organic traffic, backlink equity, and ranking value. We build a full URL map that pairs every existing URL with its destination on the new site, documents every redirect rule, and flags every URL that needs special handling — whether that is a one-to-one redirect, a consolidation, or a planned retirement. The redirect strategy, canonical plan, and sitemap structure are finalized before a single page of the new site is built.
Migration Execution and Staging Verification
While the new site is being built, we implement every redirect rule, migrate metadata and structured data, configure canonical tags, and generate the new XML sitemap. Everything is tested in staging against the URL map. We crawl the staging site the way search engines will crawl the live site and verify that every redirect resolves correctly, every canonical points where it should, and every page that matters is indexable. Nothing goes live until the staging verification is complete and every edge case is accounted for.
Post-Launch Monitoring and Verification
Launch day is a verification event, not a hope-for-the-best event. We submit the new sitemap, force a crawl in Search Console, and begin daily monitoring of indexation rates, redirect resolution, 404 errors, ranking movement, and organic traffic against pre-migration baselines. For 90 days, every metric is tracked and compared. If a redirect is missed, a canonical is wrong, or a ranking shifts unexpectedly, we catch it in hours and resolve it before the impact compounds. The migration is not complete until the monitoring window confirms that every ranking, every page, and every traffic source survived the move.
Every Migration Type. One SEO Methodology.
Replatform Without Starting Over in Search
Moving from one CMS or e-commerce platform to another changes URL structures, template logic, metadata handling, and sitemap generation. We map every difference between the old platform and the new one, build the redirect ruleset before migration begins, and verify that the new platform produces SEO-sound output. Whether you are moving to Shopify, WordPress, a headless architecture, or a custom build, the methodology is the same: map everything, redirect everything, verify everything.
Move Domains Without Losing Authority
Domain changes are the highest-risk migration type because every URL changes and every backlink needs to resolve to the new domain. We handle domain-level 301 redirects, update canonical tags, resubmit sitemaps, manage Search Console property transitions, and monitor domain authority transfer across the full 90-day window. The goal is seamless authority transfer with zero ranking disruption.
Redesign the Experience Without Redesigning Your Rankings
A visual redesign should not change your URL structure. But it often does — new navigation patterns, restructured content hierarchies, consolidated pages, and renamed sections all introduce URL changes that developers treat as cosmetic. We audit every URL change the redesign introduces, build redirects for anything that moves, and ensure the new information architecture preserves the internal linking patterns that distribute authority to your most important pages.
Restructure URLs Without Breaking What Ranks
Sometimes the migration is not a new platform or a new domain but a deliberate restructuring of your URL hierarchy — cleaning up parameter-heavy URLs, flattening deep directory structures, or reorganizing content into topic clusters. Every URL change needs a redirect, every redirect needs verification, and every internal link needs updating. We treat URL restructuring with the same rigor as a full platform migration because the SEO risk is identical.
Not sure how to protect your rankings during the migration you are planning? That is exactly what the pre-migration audit is for.
A no-obligation assessment of your current site, the SEO risk specific to your migration type, and a clear plan for preserving every ranking through the transition.
Every Layer of SEO, Mapped and Migrated
URL Inventory and Redirect Mapping
Complete crawl of every URL on your current site, cross-referenced with Search Console data, backlink profiles, and analytics. Every URL is classified by SEO value and mapped to its destination on the new site. The redirect map is the single most important document in any migration, and we treat it that way.
Canonical and Indexation Strategy
Canonical tags, meta robots directives, and indexation rules are configured on the new site before launch. We ensure no duplicate content issues are introduced by the migration, no important pages are accidentally noindexed, and the canonical chain is clean from the first crawl on the new platform.
Structured Data Migration
Schema markup does not transfer automatically between platforms. We audit existing structured data, implement equivalent JSON-LD on the new site, and validate every schema type in staging. Organization, Product, Article, FAQ, BreadcrumbList, and LocalBusiness schema are migrated and verified so rich results are preserved from day one.
Internal Linking Preservation
Internal links distribute authority across your site. When URLs change, every internal link that pointed to the old URL needs to point to the new one — not rely on a redirect. We update internal links directly in the new site architecture so link equity flows cleanly without redirect hops that dilute it.
XML Sitemap and Robots.txt Configuration
The new sitemap is generated from the new URL structure, validated against the redirect map, and submitted to Search Console at launch. Robots.txt is configured to ensure proper crawl access on the new platform. Both are monitored post-launch to catch any configuration drift that could affect indexation.
Post-Launch Monitoring and Recovery
Daily monitoring of indexation rates, ranking positions, redirect resolution, 404 error rates, and organic traffic for 90 days post-launch. Every metric is compared against pre-migration baselines. Issues are identified and resolved in hours, not weeks. Monitoring integrates with ongoing technical SEO so the migration verification transitions into continuous site health management.
Before and After
The Cost of a Migration Without an SEO Plan
Every URL that returns a 404 instead of a 301 is a page that Google drops from the index. If your highest-traffic pages are among them, the revenue impact is immediate. Recovery from a botched migration is not a matter of fixing the redirects after the fact. Google has already recrawled, already deindexed, and already redistributed the rankings you lost. Getting them back takes months of re-earning what you had.
Every backlink pointing to an old URL that does not redirect to the correct new URL is a backlink that no longer passes authority. If your domain has thousands of backlinks built over years of outreach, content marketing, and earned coverage, an incomplete redirect map turns that entire investment into dead links. Your competitors inherit the rankings those links supported.
A 30% drop in organic traffic is a 30% drop in the revenue that traffic generated. For businesses where organic is a primary acquisition channel, the financial impact of a botched migration is not theoretical. It shows up in the P&L within the first month and continues until rankings are recovered — a timeline that ranges from three months to over a year depending on the severity of the redirect failures.
The new platform was supposed to be an investment in growth. Instead, the first six months are spent recovering lost rankings, patching redirect gaps, and explaining to leadership why organic revenue dropped after a project that was supposed to improve everything. The total cost of a botched migration includes the platform investment, the revenue lost during recovery, and the <a href="/seo-audit-services">SEO remediation work</a> needed to get back to baseline.
You Run the Business. We Protect the Rankings.
You should not need to understand redirect chains, canonical tag inheritance, or crawl budget allocation. You should not be reviewing a 3,000-row URL mapping spreadsheet at midnight before launch. That is specialized work that requires specialized expertise, and it is the last thing that should be competing for your attention during a migration that already has a hundred moving parts.
Hand us the SEO migration. We handle the URL map, the redirect strategy, the performance verification, the structured data migration, and the 90-day post-launch monitoring. You focus on the business decisions that only you can make — the brand, the customer experience, the growth plan on the other side. When the content strategy needs to evolve with the new site architecture, we handle that too.
Before you ask.
Not if the migration is planned and executed correctly. We build a complete URL map and redirect strategy before any development work begins. Every URL that carries organic traffic or backlink equity gets a verified 301 redirect. We have executed migrations with zero traffic loss because the SEO plan is finalized before the build starts, not patched together after launch.
As early as possible. Ideally, we are involved before the new site architecture is finalized. The earlier we engage, the more influence we have over URL structure decisions, information architecture, and redirect planning. If you are already mid-build, we can still execute a migration plan, but the earlier the engagement, the cleaner the result.
Platform migrations (Shopify, WordPress, headless CMS, custom builds), domain changes, site redesigns, URL restructuring, and HTTP-to-HTTPS transitions. The methodology is the same regardless of migration type: inventory everything, map everything, redirect everything, verify everything, and monitor for 90 days.
Yes. Our SEO engineers embed directly with your dev team. We provide the redirect rules, canonical specifications, sitemap requirements, and structured data templates. Your developers implement them in the new build, and we verify everything in staging before launch. If you need us to handle implementation directly, we do that too.
Daily tracking of indexation rates, ranking positions for priority keywords, redirect resolution, 404 error rates, organic traffic volume, and crawl behavior in Search Console. Every metric is compared against pre-migration baselines. If anything deviates, we investigate and resolve within hours. The migration is not considered complete until the monitoring window confirms that all SEO metrics are holding.
Yes. Migration recovery is one of our most common engagements. We audit the current state, identify every redirect gap, rebuild the URL map against the new site structure, implement the missing redirects, resubmit sitemaps, and begin the monitoring window. Recovery timelines depend on the severity of the initial failure, but we have brought sites back to pre-migration traffic levels after losses of 30% or more.