Community Dev Meetup in
London, The Lightwell at Techspace | 2nd July

Join the local Optimizely developer community for an evening of insights on CMS 13, Commerce 15, SaaS architecture, AI, and modern development practices.

Limited Spots - Click here to Register

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Latest articles from our community

Jun 12, 2026

Four database surprises when upgrading from CMS 11 to CMS 13

We're in the middle of migrating a fairly large site from CMS 11 / .NET Framework to CMS 13 / .NET 10. The code migration is one thing, but the database is where the real surprises live. Everything worked fine against our dev and stage databases — and then we pointed the upgrade at a copy of the production database. Here are four things that bit...

Per Nergård (MVP)

Jun 11, 2026 - Syndicated blog

Designing ODP Real-Time Audiences for CMS Personalization and Experimentation

A practical look at when to use ODP Real-Time Audiences, how to build them, and how they fit into CMS personalization and Feature Experimentation.

Wojciech Seweryn

Jun 11, 2026

Unlock Experimentation with Content Variations in CMS 13

Part 1 argued that Content Variations is the CMS 13 feature that didn't get the keynote but should have. This is the follow-up: wiring those variations to Optimizely Feature Experimentation, measuring whether the traffic split actually holds, and serving the same experiment from two heads (classic MVC and headless Next.js) without the experiment...

Piotr

Jun 10, 2026 - Syndicated blog

umage.ai is now an Optimizely Silver Solution Partner

umage.ai is officially an Optimizely Silver Solution Partner. The badge formalises an alignment that was already there — agent-driven Optimizely work on our side, Optimizely's own investment in AI on theirs.

Allan Thraen

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Latest Forum Posts

Thread	Room	Replies	Last Update
Can we run CMS 12 and CMS 13 sites in the same opti graph instance?	Content Management System 12	1	6/12/2026 11:29:00 AM By: Wojciech Seweryn
Reporting user activity in CMS 12	Developer to developer	8	6/11/2026 2:39:33 PM By: Daniel Lack
Understanding Serilog vs Application Insights Log Levels in Optimizely	Developer to developer	1	6/4/2026 12:37:45 PM By: Scott Reed
XhtmlString editor silently dies when `EPiServer.CMS.UI` leaves are explicitly pinned + .NET SDK 10	Content Management System 12	3	6/3/2026 8:17:35 AM By: Antony
Scrolling through tabs in the CMS on EPiServer.CMS Version 12.34.2 broken	Problems and bugs	1	5/26/2026 6:51:10 PM By: Wojciech Seweryn
Changed multisite behavior in CMS13?	Developer to developer	1	5/21/2026 11:45:47 AM By: Andre

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Optimizely Most Valuable Professionals (OMVP)

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They lead the way in our community by providing copious amounts of help, inspiration and knowledge in a manner that is open, courteous, and professional.

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