Migration guide
Can you migrate Adobe Experience Manager to Optimizely?
Last updated: · By the Replatform Radar team — specialists in pre-migration CMS content audits
Yes — Adobe Experience Manager to Optimizely is a feasible but cross-stack migration that trades a Java/JCR platform for a .NET one. AEM stores content as nodes in the Java Content Repository and assembles pages from Content Fragments and HTL-rendered components; Optimizely models content as strongly-typed content types, pages, and blocks in a relational store, so nothing lifts and shifts. Expect to remodel the content architecture, rebuild templates and components in .NET/Razor, and re-export DAM assets rather than copy a repository. It is well within reach for teams that treat it as a rebuild-with-content-migration, not a port.
AEM is a Java application built on the JCR (Jackrabbit Oak) content repository, where pages, Content Fragments, Experience Fragments, and DAM assets all live as hierarchical nodes and are rendered through HTL templates and Sling models. Optimizely (formerly Episerver) is a .NET CMS where editors work with content types, pages, and reusable blocks that are defined as C# classes and persisted to SQL Server. Because the runtime, templating language, and storage model differ end to end, the migration is a re-platform rather than an upgrade.
Most of the effort concentrates in three places: translating AEM Content Fragment models and component structures into Optimizely content types and blocks, rebuilding the front end from HTL/Sling to Razor (or a headed/headless Optimizely delivery layer), and moving DAM assets into Optimizely's media library with their metadata intact. Authored page content can be scripted across via the JCR/Assets APIs into Optimizely's Content Management API, but the mapping logic — not the transfer — is the real work.
In depth
What a Adobe Experience Manager to Optimizely project actually looks like
A realistic shape for this specific transfer. Phases, the work inside each, and the failures that recur on this exact platform pair. Spans assume a mid-size estate; large or multi-site estates run longer.
- Repository and model auditWeeks 1-5
- Walk the JCR tree and separate genuinely structured content from years of loosely-nested authoring; the parts with no clean shape are the parts that decide the timeline.
- Inventory Content Fragment models, Experience Fragments and the component library, recording which are actually referenced rather than merely present.
- Map the Multi Site Manager structure - live copies, rollouts and inheritance - because Optimizely has no direct equivalent and this has to be redesigned rather than translated.
- Size the DAM properly: original assets, metadata, and which renditions and smart crops are genuinely in use versus generated once and forgotten.
- Content type designWeeks 5-10
- Translate Content Fragment models into Optimizely content types, flattening nested and multi-value fields that have no typed equivalent.
- Split AEM components into Optimizely blocks versus page-type properties; a one-to-one component-to-block mapping usually produces far more block types than the editors need.
- Redesign the multi-site strategy on Optimizely's content tree with explicit fallback rules, replacing MSM rollups with a model the team can actually operate.
- Decide the delivery model - Razor-rendered or headless via the Content Delivery API - before front-end work starts, because it changes the whole build.
- Rebuild and transferWeeks 10-22
- Rebuild HTL templates and Sling models as Razor views or a headless front end; nothing ports between a Java/JCR stack and .NET.
- Script content across via the JCR and Assets APIs into Optimizely's Content Management API, transforming rather than copying.
- Move DAM originals with metadata and regenerate renditions in Optimizely; then rewrite embedded asset links in rich text, which is where images silently vanish.
- Rebuild ContextHub or Adobe Target personalization on Optimizely's visitor groups and experimentation stack.
- CutoverWeeks 22-30
- Translate AEM /content/site/... paths and vanity URLs into the new routing with a complete 301 map, built from inbound links and analytics rather than the content tree.
- Verify the reuse graph after transfer: Experience Fragment and Content Fragment references flattened wrongly either duplicate content or silently stop propagating edits.
- Re-crawl for broken asset references, redirect chains and dropped structured data in the first fortnight after launch.
Pre-launch verification checklist
The checks worth running before DNS moves. Each one maps to a failure we see repeatedly on Adobe Experience Manager to Optimizely projects.
- Every referenced Content Fragment and Experience Fragment has a named home in Optimizely - as a block, a page type, or a deliberate retirement.
- Rich-text asset links resolve to Optimizely media URLs with no surviving /content/dam/ paths.
- Multi-site fallback behaves as the editors expect, tested by changing a shared item and confirming where it does and does not propagate.
- Vanity URLs and legacy /content/ paths return single-hop 301s to live pages.
- Structured data present on the AEM templates is present on the rebuilt ones; a rendering rebuild is where schema is usually lost.
- Personalization and targeting rules that drive revenue have a named Optimizely equivalent or a signed-off retirement.
- DAM metadata that editors search on survived the move - not just the binaries.
Risk register
| Risk | Likelihood | Mitigation |
|---|---|---|
| Loosely-structured JCR content with no typed equivalent | High | Model the three messiest content areas first with real data; they set the true estimate for everything else. |
| Embedded DAM links breaking images after launch | High | Automate the link rewrite, then crawl for /content/dam/ references before cutover. |
| MSM rollups translated literally instead of redesigned | Medium | Design the multi-site model against how the team actually publishes, then validate with a propagation test. |
| Component library ported one-for-one, overwhelming editors | Medium | Cap the block-type count and justify each addition against a real editorial need. |
| Front-end rebuild underestimated because both stacks are 'enterprise' | High | Estimate HTL-to-Razor as a fresh build; shared vocabulary does not mean shared code. |
Case studies: Adobe Experience Manager to Optimizely migrations
Anonymized, real-world lessons from moves like this one. What breaks, what works, and how to protect your traffic.
FAQ
Adobe Experience Manager to Optimizely: frequently asked questions
Can you migrate AEM to Optimizely?
Yes. Authored content and assets can be scripted across via AEM's JCR/Assets APIs into Optimizely's Content Management API, but templates and components must be rebuilt in .NET because the platforms share no runtime.
Is AEM content compatible with Optimizely?
Not directly — AEM stores content as JCR nodes and Content Fragments, while Optimizely uses strongly-typed content types and blocks, so content is transformed and mapped rather than copied.
What happens to AEM DAM assets in Optimizely?
Original assets and their metadata migrate into Optimizely's media library, but renditions, smart crops, and dynamic-media URLs are regenerated, and embedded asset links must be rewritten.
How long does an AEM to Optimizely migration take?
Most projects land between 4 and 8 months, with large multi-site or heavily personalized implementations extending past a year.
Further reading
- Adobe Experience Manager — official site
- Optimizely — official site
- Google Search Central — site moves with URL changes (how to keep URLs and their traffic intact through a move)
- Our own measurements — 27,385 live sites, from a 48,588-domain sample
Before you migrate Adobe Experience Manager to Optimizely, know exactly what breaks.
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