Sitecore XP 10.0 and 10.1 End of Life: Where to Go Next
Extended Support for Sitecore XP 10.0 and 10.1 ends on December 31, 2026, and security fixes already cost extra. The upgrade is only one of three ways out.
The short answer
Sitecore XP 10.0 and 10.1 leave Extended Support on December 31, 2026, with no included security fixes since June. Upgrading to XP 10.5 buys support to 2029 on a platform with no roadmap. SitecoreAI keeps your Sitecore partner and personalization but is a rebuild, like every other destination. Contentstack and Contentful rate highest for teams going headless, Umbraco for .NET teams cutting cost, and Optimizely SaaS CMS is the suite for marketers who want testing built in.
Key takeaways
- Both versions left Mainstream Support on December 31, 2023 and leave Extended Support on December 31, 2026. Since June 1, 2026, Extended Support no longer includes security updates or production incident help without a paid arrangement, so most 10.0 and 10.1 estates have already run five months without included patches.
- Sustaining support, which starts January 1, 2027 and runs to December 31, 2028, means documentation, the knowledge base and upgrade help toward a Mainstream version. Security fixes are not available at any price. The site keeps running, but every new flaw stays open.
- The upgrade to 10.5 is a project, not a patch. It needs Solr 10 with Basic Authentication, SQL Server 2022 or 2025, Windows Server 2022 or 2025 and .NET Framework 4.8.1, drops vendor support for the Salesforce, Dynamics 365 and Data Exchange Framework connectors, and lands on a release that adds no authoring, marketing or AI features. It buys Mainstream Support to December 31, 2029 and nothing else.
- Moving to SitecoreAI changes your code as much as moving anywhere else. It is a headless SaaS product with a JavaScript front end: templates, components, personalization rules, workflows and visitor data are all rebuilt, Sitecore ships no migration tool, and Sitecore's own guidance says upgrading XP first brings no benefit. Judge it on what it offers, not on the shared name.
- Seven weeks is not enough to leave, so plan for a period in Sustaining support. Harden what you have now, decide the destination before the budget closes, and aim to be live elsewhere before the end of 2027, when 10.2 also loses Extended Support and partner capacity tightens.
Our picks at a glance
SitecoreAIBundled CDP, Agentic Studio, no servers.
Optimizely SaaS CMSNative experimentation on managed SaaS.
ContentstackOfficial Migration Framework, deep workflows.
Optimizely PaaS DXPC# stays, Visual Builder arrives.
Xperience by KenticoMarketing tools built in, monthly releases.
UmbracoFree core, formal Sitecore migration program.
Our analysts’ take
Sitecore XP 10.0 shipped in August 2020 and 10.1 in February 2021. Together they are the versions a large share of Sitecore estates settled on after the move to version 10 and never left: the 10.2, 10.3 and 10.4 upgrades each asked for infrastructure work, and each was easy to defer while the site kept running. Sitecore's lifecycle table now closes that option. Both versions reach the end of Extended Support on December 31, 2026 and spend 2027 and 2028 in Sustaining support, which carries documentation and upgrade help and no fixes of any kind.
The date matters less than what already happened. On June 1, 2026 Sitecore changed what Extended Support includes: security updates and production incident assistance moved from included to a paid arrangement with your account representative, with no published price. An estate on 10.0 or 10.1 that did not sign that arrangement has been running without included patches for five months, after a 2025 in which a string of critical Sitecore flaws, one exploited in the wild, reached every version back to 9.0. Security questionnaires that still claim vendor patching are already wrong.
The choices are the same three every XP customer faces, with the clock run down. Upgrade to 10.5 and buy Mainstream Support to the end of 2029 on a product Sitecore no longer sells to new customers and no longer adds features to. Move to SitecoreAI, which keeps the partner and the personalization heritage but rebuilds everything else. Or move to another platform, which is the same rebuild pointed somewhere else. This guide rates eight destinations with speed first, because the deadline is already here, then upkeep, because another upgrade cycle is the thing to avoid.
What to look for
- 1
How long you can run unpatched
From January 1, 2027 no security fix exists for 10.0 or 10.1 at any price. Ask your security team how long they will accept that for a public website holding visitor data, with a web application firewall and network isolation as the only mitigations. Their answer is your real deadline, and it decides whether a 10.5 upgrade has to happen anyway as a bridge.
- 2
What the upgrade really costs
Price the 10.5 upgrade as four projects: Solr 10, SQL Server and Windows Server, .NET Framework 4.8.1 with regression testing of five-year-old custom code, and replacements for the retired Salesforce, Dynamics 365 and Data Exchange Framework connectors. Then put that figure next to a partner's fixed-scope estimate for the rebuild on each destination.
- 3
Which marketing features you actually use
Pull twelve months of usage for personalization rules, goals, Marketing Automation plans, Email Experience Manager campaigns and tests. Only SitecoreAI, Optimizely and Sitefinity ship marketer-run personalization in the product, and Email Experience Manager, Marketing Automation and Path Analyzer have no equivalent anywhere, SitecoreAI included.
- 4
Who runs it after launch
XP 10.5 still needs Windows Server, SQL Server, Solr, Identity Server and a content delivery tier, patched by you or your host. A managed SaaS removes all of that, a PaaS most of it, a self-hosted .NET platform very little. Count the people and the hosting bill, not only the license.
- 5
Which skills you keep
Optimizely PaaS DXP, Xperience by Kentico, Umbraco and Sitefinity keep your developers in C#. SitecoreAI, Optimizely SaaS CMS, Contentstack and Contentful move the front end to a JavaScript framework such as Next.js. Either way it is a rebuild; only one of them needs new hires.
The shortlist, reviewed
Contentstack
The headless platform with an official Sitecore import: the Migration Framework takes a Sitecore export, maps templates to content types and loads the stack. Workflows of up to 20 stages, branches and publish rules keep the governance XP editorial teams expect, and there is never a platform upgrade to plan.
- Best for
- Enterprises rebuilding the front end on a JavaScript stack that still need strict approval chains, many languages and data residency.
- Watch out for
- Personalization, forms and email come from partner apps or separate licenses rather than the product, and health and payment data are contractually prohibited.
- What it costs
- Free plan, Build at $29 per month, Growth at $299 per month plus $25 per extra user; Enterprise quote-only. AI runs on metered credits.
Contentful
The reference headless CMS for content that reaches more than one website: four delivery APIs, a remote MCP (Model Context Protocol) server for AI agents, a choice of model providers and audit logs streamed to your own storage. Salesforce completed its acquisition on September 1, 2026, which settles funding but not future packaging.
- Best for
- Global content programs feeding web, apps and other channels from one repository, with a developer team ready to own the front end.
- Watch out for
- No form builder, no email connector and no built-in personalization. Studio and Personalization are separately priced, and every realistic enterprise plan is a quote.
- What it costs
- Free plan, Lite at $300 per month; Premium and Enterprise quote-only. AI Actions are metered.
Umbraco
The free .NET CMS with a formal Sitecore migration program. Umbraco claims typical projects go live in about four months at 60 to 70 percent lower total cost, citing Thames Water's move. Your Sitecore developers stay in C#, and Umbraco 18 adds a first-party AI layer with an official MCP server.
- Best for
- Cost-conscious .NET organizations whose XP site is, underneath, a content-managed website with forms and search.
- Watch out for
- Personalization, A/B testing and analytics need the paid Engage add-on, from €5,100 a year, there is no SOC 2 report or HIPAA agreement, and enterprise support comes from partners rather than a vendor contract.
- What it costs
- Free software. Umbraco Cloud from €45 per month, Standard €280, Professional €730.
Optimizely SaaS CMS
The suite closest to what XP marketers do today, run as managed SaaS: Visual Builder for page assembly, native A/B and multivariate testing, and Opal agents. Optimizely courts Sitecore customers with switcher incentives and AI-assisted content audits, and partners quote three to six months for a mid-size site.
- Best for
- Enterprise marketing teams that bought XP for personalization and testing and want both on a platform the vendor runs, live inside 2027.
- Watch out for
- Quote-only with median contracts near $78,000 a year and auto-renewing terms. Audiences, analytics and email are separate Optimizely products, and the JavaScript SDK shipped three breaking major versions in 2026.
- What it costs
- Quote-only. Priced on traffic and feature tier, with experimentation and AI as add-ons on credits.
Xperience by Kentico
A mid-market .NET suite with CMS, contact profiles, personalization, forms, email and marketing automation in one product, so more of XP's bundled marketing stack has a home here than on any headless platform. A named Refresh has shipped every month of 2026, and the SaaS edition is ISO 27001 certified.
- Best for
- Mid-market .NET organizations leaving XP that want built-in marketing tools at a fixed subscription rather than an enterprise contract.
- Watch out for
- No vendor migration tool from Sitecore, no A/B testing in the product, AI agents still in preview, and a run of high-severity security advisories from May to September 2026.
- What it costs
- Quote-only. Licensed by channels, tier and cloud level as a fixed subscription, with no consumption spikes.
SitecoreAI
The successor Sitecore invests in: Page builder, Agentic Studio, a bundled customer data platform and Personalize, all vendor-hosted. The Migration Navigator package assesses your estate and plans the move, but your partner rebuilds templates, components and rules by hand on a Next.js or Angular front end.
- Best for
- Enterprises that want to keep their Sitecore partner, personalization know-how and multi-brand governance, and can fund an enterprise contract plus a nine to fourteen month rebuild.
- Watch out for
- Nothing migrates automatically, and Marketing Automation, Email Experience Manager and Path Analyzer have no equivalent. Expect vendor-set retirements at short notice, with Experience Editor leaving SitecoreAI on January 1, 2027, and the live site's hosting on Vercel or Netlify is a separate bill.
- What it costs
- Quote-only. No published tiers or free plan beyond a 14-day trial; third-party estimates run from about $61,000 to over $500,000 a year, metered on visits, interactions, seats and storage.
Optimizely PaaS DXP
The .NET route to Optimizely. CMS 13 runs on ASP.NET Core and .NET 10 with Visual Builder, Commerce Connect and the Opal agents, on Optimizely's managed Azure tier or your own hosting. Your Sitecore developers stay in C#; the item tree becomes code-first content types.
- Best for
- Enterprise .NET teams, including content-and-commerce operations, that want a modern suite they can still extend in code.
- Watch out for
- Quote-only with median contracts around $83,000 a year. It is a re-platform, not a port, and Graph plus Opti ID are mandatory cloud services even when you host it yourself.
- What it costs
- Quote-only. No free tier and rigid contract terms; third-party data puts the median contract near $83,000 a year.
Progress Sitefinity
The closest like-for-like replacement on paper: a .NET CMS with a native customer data platform, personalization, A/B testing, SEO tooling and a HIPAA business associate agreement that names the product. The 2026 Generative CMS release adds brand and SEO agents and an MCP server.
- Best for
- Marketing-led mid-enterprise teams in regulated industries that want to stay on Microsoft infrastructure with built-in marketing tools.
- Watch out for
- Quote-only pricing with reported renewal increases of 40 to 100 percent, five security advisories in June 2026 including a maximum-severity flaw, and self-hosted operations as heavy as XP's unless you buy Sitefinity Cloud.
- What it costs
- Quote-only. Licensed per server or domain, with editor seats in blocks of five. Third-party estimates run $20,000 to $60,000 a year.
Upgrade, SitecoreAI or another platform: the honest comparison
Sitecore's own transition guidance says upgrading XP before moving to SitecoreAI brings no benefit in efficiency, cost or stability, because SitecoreAI is a different architecture. That one sentence reframes the whole decision. If the vendor's own successor is a rebuild, the Sitecore name buys continuity of partner and personalization know-how, not a shorter project, and the three options should be compared on what each delivers for the same rebuild money.
Upgrade to 10.5
Buys Mainstream Support to December 31, 2029 and current Windows, SQL Server and Solr versions. Costs an infrastructure project, replacements for the retired CRM connectors and regression testing of every customization, and delivers no new authoring, marketing or AI capability. Right only when a regulator or an unreplaceable xDB feature forces you to stay, and even then with a 2028 exit decision written into the plan.
Migrate to SitecoreAI
A headless SaaS with a Next.js or Angular front end. Templates become new content types, renderings become components, personalization rules are recreated in Personalize, and xDB history does not move. Sitecore prices an assessment and advisory package; the build is your partner's. Right when the Sitecore partner relationship and personalization maturity are real assets and the enterprise budget is there.
Migrate to another platform
The same rebuild, pointed at a product chosen on merit. The .NET suites keep your developers, the headless platforms add a Sitecore importer or a migration program, and several cost a fraction of an XP renewal. Right when the honest usage report shows a content-managed website rather than a personalization engine, which describes most 10.0 and 10.1 estates.
A 2027 plan that starts in Sustaining support
No 10.0 or 10.1 estate can be live elsewhere by December 31, so the plan has to assume a period with no vendor fixes. That is manageable if it is deliberate and short.
Harden now
Put a web application firewall in front of content delivery, restrict the content management server to the office network or a VPN, disable the package installer and any unused modules, and apply every hotfix Sitecore has published for your version. Document it for the security team; it is the control that replaces patching.
Decide the destination before the budget closes
Run the usage report, get two fixed-scope rebuild estimates per shortlisted platform, and choose by the end of the first quarter of 2027. Every month without a decision is a month in Sustaining support with no exit date.
Freeze XP development
Stop building new features on a platform you are leaving. Content keeps flowing; code does not. The money saved pays for the discovery phase on the new platform.
Target a 2027 go-live
Headless and SaaS destinations quote three to six months for a mid-size site, SitecoreAI nine to fourteen. Both fit inside 2027 if the decision lands by spring. On December 31, 2027, 10.2 leaves Extended Support too, and partner capacity tightens.
Questions to settle before you sign anything
Get the Sustaining support terms in writing
Ask your account representative what production incident help exists for 10.0 or 10.1 after January 1, 2027, at what price, and confirm that no security fix will be issued at any price. Your board should hear that from Sitecore, not from a partner.
Price the rebuild separately from the license
Templates, components and personalization are rebuilt on every destination, including SitecoreAI. Two partner estimates per platform show the real spread, which is usually larger than the license spread.
Settle the connector story first
The Salesforce, Salesforce Marketing Cloud, Dynamics 365 and Data Exchange Framework connectors lose vendor support on 10.5 and do not exist on SitecoreAI. Ask every vendor to show the live integration to your CRM with your fields before you talk price.
Read what the usage report says about xDB
If fewer than a dozen personalization rules and no automation plans ran in twelve months, you do not need a platform with a customer data platform in the base license. Price that honestly.
Count hosting and front-end bills on headless
SitecoreAI, Contentstack and Contentful host the CMS, not your website. Vercel, Netlify or your own cloud carries the front end, often $25,000 to $100,000 a year at enterprise traffic. Add it to the comparison.
Frequently asked questions
When does Sitecore XP 10.1 support end?
Mainstream Support for Sitecore XP 10.0 and 10.1 ended on December 31, 2023 and Extended Support ends on December 31, 2026. Both then move to Sustaining support until December 31, 2028, which covers documentation and upgrade help but no security fixes. Since June 1, 2026 security updates in Extended Support have needed a paid arrangement, so most estates are already unpatched.
Is Sitecore XP 10.0 still supported?
Until December 31, 2026 it is in Extended Support, which since June 1, 2026 includes documentation and upgrade assistance but not security updates or production incident help unless you have paid for them. From January 1, 2027 it is in Sustaining support, where no security fix is available at any price. The platform keeps running; the risk sits with you.
Should we upgrade from Sitecore XP 10.1 to 10.5 or move to SitecoreAI?
Upgrading to 10.5 restores Mainstream Support to the end of 2029 but costs an infrastructure project on a product with no feature roadmap. SitecoreAI is Sitecore's future, but moving there is a rebuild, and Sitecore's own guidance says upgrading first brings no benefit. Upgrade only if you must stay on XP for years; otherwise put the money into the rebuild, on SitecoreAI or elsewhere.
Is migrating to SitecoreAI easier than migrating to another platform?
Not materially. SitecoreAI is a headless SaaS with a JavaScript front end, so templates, components, personalization rules, workflows and visitor data are rebuilt, and Sitecore ships an advisory package rather than a migration tool. What carries over is your partner relationship and your team's Sitecore vocabulary. Compare destinations on what they deliver for the same rebuild budget.
What happens if we stay on Sitecore XP 10.0 after 2026?
The site keeps running and you keep access to documentation and upgrade help toward 10.5. No security fixes are issued, so any new vulnerability stays open until you leave, and your security questionnaires can no longer claim vendor patching. Most teams can carry that for months with a web application firewall and network isolation, not for years.
How we rated these platforms
Each rating combines the relevant criteria from our independent scorecards into a five-point scale. The Fit score blends the ratings below, weighted for this topic, into one number out of 10. Ratings are recalculated whenever a scorecard is updated, so the order above always reflects current evidence. The written analysis was last reviewed on November 8, 2026.
Scorecards and platform inclusion are unsponsored: no vendor pays to appear in this guide or to change a rating. Full criteria, weights and evidence are in the methodology and on each platform’s scorecard. Spotted something out of date? Tell us.
Still deciding?
Answer seven questions for a shortlist built around your team, or put the top two side by side.