Case Study
View Case StudyTray.ai
Migrating hundreds of thousands of pages, re-platforming and extending for the leading composable AI integration platform
From Builder.io to Kentico
We are the Builder.io to Kentico migration experts
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Challenges with Builder.io
Key pain points
Builder.io looks impressive in demos but the reality of day-to-day usage tells a different story. The editor can be laggy, especially with more than 30 components on a page, and we have seen reports of outright crashes that lose unsaved work. The documentation is a persistent sore point. Developers on forums describe spending days trying to get basic integrations working because the docs are outdated or incomplete. For an agency setting up projects for clients, unreliable documentation means unpredictable timelines.
Pricing is another area where Builder.io catches teams off guard. The free tier exists but is quite limited, and costs ramp up quickly once you need features like roles, scheduling, or higher usage limits. We have seen complaints from freelancers and small teams about unexpected charges and slow support response times when trying to resolve billing issues. The lack of self-hosting is also a hard blocker for some clients with strict data residency requirements.
The biggest concern from our perspective is vendor lock-in. Builder.io's SDKs are deeply embedded in your frontend code, and if you ever need to migrate away, you are essentially rebuilding your page composition layer from scratch. There is also no real-time collaboration, so two editors working on the same page can overwrite each other's changes without warning.
Editor performance and stability
The visual editor becomes laggy with complex pages and has been reported to crash, losing unsaved work. Teams with content-heavy pages will feel this friction daily.
Outdated and incomplete documentation
Developers consistently report that the docs are confusing, outdated, or missing critical steps. Getting started takes far longer than it should for a tool that sells itself on speed.
Vendor lock-in risk
Builder.io's SDKs are tightly coupled to your frontend. Migrating away means rebuilding your entire page building and composition layer from scratch.
Limited collaboration tools
Builder.io now offers branching and peer review workflows in its Fusion product, but true real-time co-editing is still missing. Editors working outside of the Projects workflow can still overwrite each other's changes.
Pricing escalation
Costs ramp up quickly beyond the free tier, and teams report unexpected charges. Basic features like roles and scheduling sit behind higher-priced plans.
Slow and unresponsive support
Multiple users report delayed support responses, unresolved tickets, and difficulty getting refunds or cancellations processed in a reasonable timeframe.
Benefits of Kentico
Key advantages
If Corporate Memphis art, dashboards, and spreadsheets are what you need, Kentico might be your happy place. The interface feels like Microsoft Office; that is, it is familiar, editor-friendly, and hard to break. And unlike platforms that need 14 plugins and a prayer, Kentico ships with the whole toolkit. It has marketing automation, e-commerce, workflows, multisite, multilingual, and the entire lot.
It scales well, handles heavy enterprise workloads, and integrates cleanly through APIs. But it is not the right fit for tiny brochure sites, but for large organizations that want everything under one roof, it’s a serious contender. If you’re unsure whether you really need the full armoury, send it our way and we’ll tell you if you’re ready for Kentico or if you’re just buying a tank to deliver pizza.
User-friendly interface
Kentico’s UI feels familiar with “Office toolbar,” like functions, rather than “developer terminals.” Editors can publish, schedule, and update content without needing a developer on standby.
Built in tools
You don’t need to glue together 12 plugins just to run campaigns or sell products. Kentico ships with automation, personalization, analytics, and e-commerce baked in.
Flexible API and extensibility options
If your team speaks .NET, Kentico supports it. Its APIs and integration options make it easier to connect CRMs, ERPs, BI tools, and custom services without duct-tape engineering.
Workflow and role management system
It has multiple approvers, granular permissions, and strict publishing rules. Legal, marketing, and IT can all sign off without stepping on each other.
Fast onboarding + safe staging
Training is quick, publishing is simple, and staging environments keep mistakes from going live. Teams can work confidently without “oops, wrong button” moments.
Headless-ready
If you want speed, security, and headless flexibility, Kentico delivers. Content moves fast, scales well, and supports multi-site or multilingual setups without falling over.
Common questions
Builder.io to Kentico migration FAQs
Answers to the most common questions about Builder.io to Kentico migration
Can you migrate from Builder.io without losing your page designs?
Yes, but it takes work. Builder.io's visual editor stores page compositions as JSON that references your registered components. Those component registrations are tightly coupled to Builder's SDK, so you can't just export and import elsewhere. What you can preserve is the design itself. We extract the page structures, map them to equivalent components in the new system, and rebuild the composition layer. The visual output stays the same. Typical timeline is 6-10 weeks depending on how many page types and custom components are involved. The biggest time sink is usually recreating A/B test variants and personalisation rules that lived inside Builder's platform.
What does Builder.io actually cost?
Builder.io's free tier gives you 1 user and basic features, which is enough to evaluate but not to run a real project. The Growth plan starts at $49/month and includes more seats and content types. Beyond that, pricing gets opaque. Teams needing roles, scheduling, and higher API limits are pushed toward custom Enterprise plans that typically start in the $500-$1,000/month range. We've heard from freelancers and small agencies who were caught off guard by charges after exceeding limits on the Growth plan. Builder.io also charges per "impression" on higher tiers, which means your costs scale with traffic in ways that aren't always predictable.
How does Builder.io compare to a traditional headless CMS?
Builder.io is a visual page builder first and a CMS second. That distinction matters. If your primary goal is letting marketing teams build landing pages without developer involvement, Builder.io does that well. If you need structured content modelling, editorial workflows, multi-language support, or content that powers more than just web pages, a traditional headless CMS is a better fit. Builder.io's SDK embeds deeply into your frontend code, which creates vendor lock-in that most headless CMS platforms avoid. We typically recommend Builder.io only when the use case is narrow: high-volume landing page creation for marketing teams. For everything else, a headless CMS with a proper content model gives you more flexibility long-term.
What's the main risk of building on Builder.io?
Vendor lock-in. Builder.io's SDKs are woven into your component rendering layer, which means migrating away requires rebuilding how your pages are composed and rendered. That's not a content migration, it's an architecture migration. With a typical headless CMS, your content is accessible through standard APIs and your frontend is independent. With Builder.io, the two are intertwined. We've worked with teams who spent months extracting themselves from Builder.io because every page template needed to be recreated outside the platform. If you're evaluating Builder.io, go in with eyes open about the exit cost.
How much does a Kentico migration typically cost?
Kentico migrations are enterprise-scale projects. For a site with 1,000 to 10,000 pages, expect the migration itself to run 8 to 16 weeks of development time. The cost depends on how deeply you've customised Kentico's marketing automation, e-commerce, and workflow features. Simple content-only migrations are faster, but most Kentico installations have years of custom .NET logic that needs to be rebuilt or replaced. We've seen total migration budgets range from $30,000 to $150,000 depending on scope, which still often pays for itself within 18 months through reduced licensing and maintenance costs.
Why are companies migrating away from Kentico?
Licensing costs are the initial trigger for most conversations we have. Kentico's annual fees add up fast, especially when you include maintenance, hosting, and the cost of .NET developers to keep it running. But the deeper issue is agility. Major version upgrades introduce breaking changes that can destabilise sites with years of custom logic. The admin UI feels dated as projects scale. Multi-tenant setups carry real risk since one bad customisation can take down every site in the cluster. Teams eventually decide the operational overhead isn't worth it.
What's the biggest challenge when migrating from Kentico?
Untangling the all-in-one features. Kentico bundles marketing automation, e-commerce, analytics, workflows, and content management into one platform. When you migrate away, each of those capabilities needs a new home. Content goes to your new CMS, email automation might move to a tool like Resend or Customer.io, and e-commerce might need a dedicated platform. We map out every feature your team actually uses before writing a single migration script, because the biggest risk is discovering a dependency mid-project that nobody documented.
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