Sitecore XP upgrade and support

Your site runs on Sitecore XP and it does what it needs to do. But the version under it is getting older:

• Since 1 June 2026, security updates for versions in Extended support are no longer included: you pay Sitecore for them.

• Only 10.4 and 10.5 still get security updates as part of their regular support.

• On 31 December 2026, 10.0 and 10.1 lose security updates altogether. 9.x already has none.

• The stack around it ages too: Windows Server, SQL Server, Solr and .NET versions that are no longer supported themselves.

Running without security updates means known holes stay open. It also shows up in security reviews, audits and insurance questions. A security audit will flag it.

Mainstream: security updates and fixes included. Extended: security updates only for a fee, since 1 June 2026. After Extended comes Sustaining: no security updates at all.

As published by Sitecore in its support lifecycle, checked November 2026.

• 9.x, 10.0 or 10.1: upgrade now.
  You have no security updates, or you lose them at the end of 2026. Every month you wait, the gap to a supported version stays open.

• 10.2 or 10.3: plan 10.5 for 2027.
  Your site is in Extended support, so you pay for security updates today. An upgrade to 10.5 puts that money into a version with years of support ahead.

• 10.4: covered until the end of 2027.
  No rush, but plan 10.5 in time, ideally together with other work on the site.

• 10.5: you're on the latest version.
  Mainstream support runs until the end of 2029. Keep installing the hotfixes and security fixes Sitecore publishes.

Why 10.5 as the target? It's the version with the longest support ahead. An upgrade to 10.4 only buys you until the end of 2027.

• Upgrade to 10.5, including the infrastructure under it (Windows Server, SQL Server, Solr, .NET) and your modules.

• Not happy with your current implementation? We get your XP back on track.

• Quality assurance. Our QA team tests every flow against test cases, also the way your editors work in the CMS, not only whether the site works.

• Login and SSO, for example with Azure AD B2C for your customers.

• Hosting on Azure, or on the infrastructure you already have.

• More out of XP: personalisation and xDB data you already pay for but don't use yet.

• Ongoing development: new sites, countries, languages and features on a roadmap.

1. Free XP upgrade check. We look at your version, support date and patch level, your infrastructure against what 10.5 needs, your modules, your custom code and your hosting.

2. Upgrade plan. You get the upgrade path, the blockers and a first estimate of the work. Custom pipelines, overridden Sitecore code and old serialization tools get a plan per piece.

3. Upgrade on a copy, tested by our QA team. We install 10.5 next to your current site and upgrade a copy of your databases and code. Our QA team runs the tests, then your team does the acceptance test.

4. Go live. Your site stays online during the upgrade. Editors pause for a short content freeze, usually a few days, while we sync the last content and switch over.

De Watergroep.
The largest drinking water company in Flanders. We upgraded their website and customer portal to the latest Sitecore version on a new infrastructure, with Azure AD B2C as the new login.

"Thanks to Blastic's proactive and professional approach, combined with thorough planning, the migration of our website and customer portal to the latest version of Sitecore went very smoothly."

Bert De Winter, Director of Innovation at De Watergroep

DOM Security.
A modular Sitecore XP framework for country sites across Europe, with personalisation per audience. New country sites reuse the same building blocks.

• Two Sitecore Technology MVPs, Koen Heye and Marek Musielak, with more than 20 MVP titles between them. Sitecore gives this award each year to people who share their knowledge with the community.

• Certified Sitecore partner, with at least seven Sitecore-certified developers. Part of our team has worked with Sitecore since version 6.

• XP from the inside: we have built, upgraded and taken over XP platforms for years, from utilities to manufacturing.

An upgrade gets you back on a supported version. Staying there takes follow-up. With a support agreement, we take that on:

• we follow Sitecore's security bulletins and plan the hotfixes and security fixes for your version;

• a periodic health check of your site on search visibility, security and accessibility;

• support from people who know your platform.

What's included and how often, we agree with you.

It depends on where you start: your current version, the number of sites and languages, the modules you use, how much custom code there is and where you host. A 10.4 site with little custom code is a different job from a 9.x site with years of extensions.

That's why we start with the free XP upgrade check. You get the upgrade path and a first estimate, and after the intake a quote that fits your site. You buy your Sitecore licence directly from Sitecore.

Not sure yet whether to stay on XP or move to SitecoreAI? Read how we help you choose, or see what a move to SitecoreAI involves.