Kentico vs Next.js: Which Is Better in 2026?
Kentico EOL Is Coming — Next.js Offers a Way Out
Choose Kentico only if you're committed to the .NET ecosystem and accept SaaS-only vendor lock-in with Xperience. Choose Next.js if you want full ownership of your codebase, dramatically better performance, and the freedom to pair any headless CMS with any hosting provider. With Kentico 13 reaching end of life in late 2026, Next.js with a headless CMS is the migration path that gives you the most long-term flexibility.
Kentico (Kentico 13 / Xperience by Kentico)
A .NET-based CMS and digital experience platform for enterprise websites
Next.js
The React framework for production-grade websites and applications
Feature Comparison
| Feature | Kentico (Kentico 13 / Xperience by Kentico) | Next.js |
|---|---|---|
| Open source | ✗ | ✓ |
| Self-hosting option | Kentico 13 only (EOL 2026) | ✓ |
| A/B testing built-in | ✓ | Via integrations (LaunchDarkly, Vercel Edge Config, etc.) |
| Edge rendering / ISR | ✗ | ✓ |
| Marketing automation | ✓ | Via integrations (Segment, HubSpot, etc.) |
| Built-in page builder | ✓ | Via headless CMS (Sanity Studio, Contentful, etc.) |
| Multi-site management | ✓ | ✓ |
| Server-side rendering | ✓ | ✓ |
| API-first architecture | ✗ | ✓ |
| Static site generation | ✗ | ✓ |
| Headless content delivery | Partial — bolt-on, not native | ✓ |
| React/Vue/Svelte frontend | ✗ | ✓ |
What is Kentico (Kentico 13 / Xperience by Kentico)?
Kentico is a .NET-based CMS and digital experience platform. Kentico 13 is the last self-hostable version and reaches end of life in late 2026. Its successor, Xperience by Kentico, is a SaaS-only platform with fundamentally different architecture and pricing — making the upgrade path essentially a full replatforming project.
What is Next.js?
Next.js is a React-based framework for building production websites and applications. It supports static generation, server-side rendering, and incremental static regeneration out of the box. As a frontend framework, it pairs with any headless CMS to give teams full ownership of their code, hosting, and content infrastructure — the opposite of vendor lock-in.
Key Differences
Ownership and Vendor Lock-in
Kentico 13 is EOL. Kentico's only supported path forward is Xperience by Kentico, which is SaaS-only — you can't self-host, you can't export your templates, and you're locked into their pricing forever. Next.js is MIT-licensed open-source. You own every line of code, deploy anywhere, and can switch CMS providers without rebuilding your frontend.
Performance and Core Web Vitals
Kentico sites typically score 40-75 on Lighthouse due to heavy server-rendered .NET pages, jQuery dependencies, and unoptimized asset delivery. Next.js sites routinely hit 90-100 with built-in image optimization, automatic code splitting, edge rendering, and ISR. This directly impacts SEO rankings and conversion rates.
Architecture: Monolith vs Composable
Kentico is a monolithic DXP — CMS, marketing automation, personalization, and analytics all bundled together. This sounds convenient until you need to replace one piece. Next.js follows the composable architecture pattern: pick a best-in-class CMS, analytics tool, marketing platform, and A/B testing service independently. Each piece is replaceable without touching the others.
Developer Talent Pool
Kentico requires .NET and C# developers with specific Kentico platform experience — a shrinking and expensive talent pool. Next.js runs on React, the most widely adopted frontend framework in the world. Finding, hiring, and retaining React developers is dramatically easier and more cost-effective than sourcing Kentico specialists.
Total Cost of Ownership
Kentico 13 required Windows Server licensing, IIS hosting, and Kentico license fees. Xperience by Kentico adds SaaS subscription costs that scale with usage. Next.js is free. Pair it with Vercel ($0-20/mo per seat) and a headless CMS ($0-300/mo), and your infrastructure costs drop by 60-80% compared to enterprise Kentico deployments — even before factoring in cheaper developer labor.
Performance Comparison
| Metric | Kentico (Kentico 13 / Xperience by Kentico) | Next.js |
|---|---|---|
| TTFB | 300-800ms typical on shared .NET hosting | Sub-100ms with edge rendering and ISR |
| Build tool | MSBuild / .NET compilation | Turbopack (Next.js 15+) / Webpack |
| Base JS bundle | ~200-400KB (jQuery + custom scripts) | ~70-90KB with React (less with selective hydration) |
| Core Web Vitals | Often fails CLS and LCP thresholds | Built-in Image, Font, and Script optimization components |
| Lighthouse range | 40-75 | 90-100 |
SEO Comparison
| SEO Feature | Kentico (Kentico 13 / Xperience by Kentico) | Next.js |
|---|---|---|
| SSG support | ✗ | ✓ |
| SSR support | ✓ | ✓ |
| Schema markup | Manual implementation required | ✓ |
| Meta tag control | ✓ | ✓ |
| Sitemap generation | ✓ | ✓ |
| Core Web Vitals optimization | ✗ | ✓ |
Kentico (Kentico 13 / Xperience by Kentico)
- All-in-one platform with CMS, marketing automation, and analytics in a single install.
- Built-in A/B testing and personalization for marketing teams.
- Mature .NET ecosystem with strong enterprise support history.
- Page builder lets non-technical editors create layouts visually.
- Kentico 13 reaches end of life late 2026 — no more security patches or support after that.
- Xperience by Kentico is SaaS-only, creating complete vendor lock-in with no self-hosting escape hatch.
- Performance is poor by modern standards — heavy page weight, slow TTFB, and jQuery dependencies.
- Requires Windows Server and .NET expertise, limiting your developer hiring pool.
Next.js
- Free and open-source with zero vendor lock-in — deploy anywhere, switch hosts anytime.
- Best-in-class performance with SSG, ISR, and edge rendering delivering sub-100ms TTFB.
- Massive React ecosystem means access to the largest frontend developer talent pool in the world.
- Pair with any headless CMS — Sanity, Contentful, Strapi, Payload — and swap later if needed.
- Built-in SEO primitives (metadata API, sitemap generation, image optimization) that directly improve rankings.
- No built-in CMS — you need to select and integrate a separate headless CMS for content management.
- Marketing automation and A/B testing require third-party integrations rather than being included out of the box.
- Requires JavaScript/React expertise, which is a shift for .NET-only teams.
When to Choose Kentico (Kentico 13 / Xperience by Kentico)
- You're deeply embedded in .NET with internal developers who specialize in C# and have no appetite for JavaScript frameworks.
- You need built-in marketing automation and personalization and don't want to integrate separate tools.
- Your organization requires a single-vendor DXP for compliance or procurement reasons and accepts the lock-in tradeoff.
When to Choose Next.js
- You're on Kentico 13 facing EOL and want to own your codebase rather than moving to another locked-in platform.
- Performance and SEO are priorities — you need Lighthouse scores above 90 and fast Core Web Vitals.
- You want the freedom to choose your CMS, hosting provider, and every tool in your stack independently.
- You're building a modern composable architecture where best-of-breed tools replace monolithic suites.
Can You Migrate?
Yes. We've migrated 5,000+ sites between platforms. We handle data migration, content modeling, frontend rebuilds, and SEO preservation. Every migration is zero-downtime.
Frequently Asked Questions
When does Kentico 13 reach end of life?
Kentico 13 reaches end of life in late 2026. After that, no more security patches, bug fixes, or technical support from Kentico. If you're still running it past that date, you're looking at real security risks and compliance problems that'll only get worse over time. The one supported migration path Kentico offers is moving to Kentico Xperience by Kentico — a SaaS-only platform that's architecturally different from what you're running now, with a pricing model to match.
Can I migrate from Kentico to Next.js?
Yes, and it's a well-worn path. You export your content from Kentico into a headless CMS — Sanity, Contentful, or Strapi are the usual suspects — then build your frontend in Next.js. You end up owning your codebase outright, your performance improves, and you can host wherever you want. For most sites, the migration runs 6-12 weeks depending on how complex things have gotten over the years.
Is Kentico Xperience the same as Kentico 13?
No — and this trips people up. Kentico Xperience by Kentico isn't an upgrade to Kentico 13, it's a completely different product. SaaS-only, so self-hosting isn't on the table. Subscription pricing that's significantly steeper. Different architecture, different APIs, different templating system. When you move from Kentico 13 to Xperience, you're doing a full replatforming project. Don't let anyone tell you otherwise.
Is Next.js good for enterprise websites?
Next.js isn't some niche framework — Nike, Hulu, TikTok, the Washington Post all run on it. It handles SSR, ISR, role-based access, internationalization, and multi-site setups without needing a pile of plugins. Pair it with a headless CMS and enterprise teams get the editorial workflows they actually need, without getting locked into a single vendor's roadmap and pricing decisions.
What headless CMS should I use with Next.js to replace Kentico?
Honestly, the right pick depends on your team and what you're building. Sanity's real-time collaboration is hard to beat if editors are working simultaneously. Contentful's the mature enterprise option — solid governance, strong audit trails. Strapi is open-source and self-hostable, which matters a lot when data sovereignty isn't negotiable. All three plug into Next.js cleanly, and editors who've been stuck in Kentico 13's admin interface tend to notice the difference immediately.
How much does it cost to run Next.js compared to Kentico?
Next.js itself is free and open-source. Vercel starts free and runs about $20/month per seat for teams. A headless CMS adds anywhere from $0 to $300/month depending on which one you pick and how much content you're managing. Kentico Xperience enterprise SaaS? Starts in the thousands per month. Even once you factor in migration costs, most organizations come out with a lower total cost of ownership before the first year's up.
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