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CMS comparison EmDash vs Optimizely CMS

EmDash vs Optimizely CMS

EmDash is an open-source traditional CMS that you host yourself. Optimizely CMS is a closed-source enterprise DXP that you can host yourself or run on the vendor's cloud. The table below sets them side by side on 28 features. They get a different status on 10.

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  • EmDash Traditional · Open source · 14 of 28 built in
  • Optimizely CMS Enterprise DXP · Closed source · 22 of 28 built in

Sources checked: EmDash on 29 Sept 2026, Optimizely CMS on 29 Sept 2026. Plans and releases can change after those dates.

WAYF is an official Payload partner and top contributor. Every platform in the table is classified by the same published definitions, and each answer lists the vendor page it came from.

Feature comparison

Built inPaid tierPlugin or add-onLimitedNot available
EmDash vs Optimizely CMS feature comparison. Columns are the two platforms. Rows are features, grouped by area.
Platform
EmDash Traditional
Optimizely CMS Enterprise DXP
Overview
What it is Open-source CMS from Cloudflare that runs inside an Astro site, with the admin and pages in one app on Cloudflare Workers or Node.js.Optimizely's .NET CMS for rendered and headless sites, hosted on Optimizely's DXP cloud or self-hosted, with Optimizely Graph for delivery.
Edition compared The product and release each column describes. EmDash 1.0, open source Version 1.0.1, released 28 Sept 2026 Optimizely CMS 13 PaaS, the current flagship. CMS SaaS is a separate hosted variant. Version 13.1.3, released 9 Sept 2026
Vendor Cloudflare emdashcms.com Optimizely optimizely.com
Licence Open source MIT Closed source Proprietary
Hosting Self-hosting No vendor cloud No managed hosting. You deploy to your own Cloudflare account or Node.js server. Self-hosting Vendor cloud Self-hosted installs lose Opti ID features such as Opal and the DAM.
Built with TypeScript, Astro.NET 10, ASP.NET Core
Database SQLite, Cloudflare D1, PostgreSQL, libSQLSQL Server, Azure SQL on DXP
Pricing Public list prices only. Hosting and implementation are extra everywhere. Free to start Free and open source. You pay only for hosting. No free option Pricing on request.
Content modelling
Content model in code You define content types in files in your repository, review them like any other code and apply them from there. Imperative migration scripts alone count as limited. Limited Seed files set up new sites. A live site's model changes through the admin, API or CLI. 20 Built in Content types as C# classes. 3
Content model in the UI Admins can create and change content types and fields in the admin interface without writing code. Built in Admin role only. 220 Built in Content types and properties in Settings. 4
Reusable blocks Editors compose pages from reusable, typed components or blocks, and can reorder them. Built in Blocks field with versioned block types. 5 Built in Blocks in content areas and Visual Builder elements.
Localization Editors translate content per locale inside the CMS, by field or by entry, without a separate site for each language. Built in Each translation is a separate entry with its own status. 6 Built in Language branches per content item. 5
Image transformations The CMS resizes, crops or converts images on request, through URL parameters or generated sizes, with no external service. Built in Uses Astro's image endpoint for sizes and formats. Crop and focal point in the editor. 78 Built in DXP CDN resizes, crops and converts images by URL parameters. 6
APIs and delivery
REST API A documented REST or JSON HTTP API returns content. Built in 9 Built in Content Delivery API 13 and a management REST API. 12
GraphQL API The vendor or an official module provides a GraphQL API for content. Not available Built in Optimizely Graph, included in the CMS 13 licence. 28
Webhooks The CMS can call an external URL when content is created, changed or published. Plugin or add-on Official webhook-notifier plugin. 18 Limited Graph webhooks fire on sync batches and expired content only. Per-item hooks need code. 72
Renders the website The CMS itself renders and serves the public pages through themes or templates. Headless-only products answer no. Built in The Astro site renders the pages. 2 Built in ASP.NET Core MVC and Razor rendering, or headless. 2
Editorial workflow
Drafts Editors save changes as a draft and publish them later. The live version stays untouched until then. Built in 10 Built in 9
Scheduled publishing An editor can set a future date and time for content to publish or unpublish. Built in 10 Built in 9
Version history The CMS keeps earlier versions of an entry, and editors can compare or restore them. Built in On revision-enabled collections. 10 Built in
Preview Editors can see unpublished content rendered as it will appear on the site before publishing. Built in Signed preview links. 11 Built in
Visual editing Editors can click on the rendered page and edit content in place or in a side panel next to it. Built in Signed-in editors get visual editing on the rendered page. 11 Built in Visual Builder. 2
Approval workflows Content moves through review stages you configure, such as draft, review and approved, with permissions per stage. Not available Contributors cannot publish. No configurable review stages. 1210 Built in Approval sequences. 10
Content releases Editors group changes across several entries and publish them together as one release. Not available Built in Projects publish or schedule grouped items together. 11
Real-time co-editing Two or more editors can work on the same entry at once and see each other's changes live. Not available Not available Comments and notifications only. 12
Access and governance
Custom roles Admins define their own roles with granular permissions instead of picking from a fixed set. Not available Five fixed roles from Subscriber to Admin. 12 Built in Access rights for roles and virtual roles. 13
Field-level permissions Admins can restrict access to single fields, on top of content types and entries. Not available 12 Not available Access rights apply per content item. Not documented per property. 13
Single sign-on Editors can sign in through SAML or OpenID Connect against a company identity provider. Limited Microsoft Entra sign-in built in. Other IdPs through Cloudflare Access. No native SAML. 12 Built in Opti ID with an external identity provider, or OpenID Connect in code. 2
Audit log The CMS logs who changed what and when across the whole installation, and admins can review the log. Plugin or add-on Official audit-log plugin. 19 Built in Change Log in Settings. 14
Platform and extensibility
Multiple sites One installation or account can manage several separate websites or brands with shared users. Not available Built in Several sites and hosts in one installation. 15
Extensible admin UI Developers can add their own components, views or fields to the editing interface. Built in Plugins add admin pages and dashboard widgets. 13 Built in Shell modules, gadgets and custom editor widgets. 16
Plugin marketplace The vendor runs an official directory or marketplace of installable extensions. Built in Plugin registry, launched with 1.0. 143 Built in Optimizely connectors directory and NuGet add-ons. 17
Form builder Editors can build and publish forms and collect submissions without code. Plugin or add-on Official forms plugin. 17 Plugin or add-on Optimizely Forms package. No extra licence. 18
Site member accounts The platform handles sign-up and login for public site users or members, separate from editors. Limited Subscriber role reads member-only content. Members share the editors' user system. 12 Limited Visitor login uses ASP.NET Core authentication set up in code. 2
AI writing assistant A first-party AI feature in the editing interface generates, rewrites or translates content. Not available Plugin or add-on Opal, billed through Opal credits. Needs Opti ID on DXP. 219
Official MCP server The vendor publishes a Model Context Protocol server so AI agents can read or write content. Built in Built in and on by default. 15 Built in MCP server in the Optimizely.Cms.Opal.Tools package. 20

Considering more platforms? Compare EmDash and Optimizely CMS with the rest of your shortlist in the CMS comparison tool.

Where they differ

EmDash and Optimizely CMS get a different status on 10 of the 28 features and the same status on 18. EmDash has 14 built in on its baseline edition, Optimizely CMS has 22. Two matching statuses can still name different paid tiers or limits, so read the notes in the table before treating a row as equal.

Licence
EmDash is open source (MIT). Optimizely CMS is closed source (Proprietary).
Vendor cloud
EmDash has no vendor-run cloud. Optimizely CMS has a vendor-run cloud.
Free option
EmDash has a free option. Optimizely CMS has no free option.

Built in on Optimizely CMS, a different answer on EmDash 8

  • Content model in code EmDash: Limited. Optimizely CMS: Built in.
  • GraphQL API EmDash: Not available. Optimizely CMS: Built in.
  • Approval workflows EmDash: Not available. Optimizely CMS: Built in.
  • Content releases EmDash: Not available. Optimizely CMS: Built in.
  • Custom roles EmDash: Not available. Optimizely CMS: Built in.
  • Single sign-on EmDash: Limited. Optimizely CMS: Built in.
  • Audit log EmDash: Plugin or add-on. Optimizely CMS: Built in.
  • Multiple sites EmDash: Not available. Optimizely CMS: Built in.

Built in on neither, with different answers 2

  • Webhooks EmDash: Plugin or add-on. Optimizely CMS: Limited.
  • AI writing assistant EmDash: Not available. Optimizely CMS: Plugin or add-on.

More comparisons

Full write-ups with worked examples and costs: Optimizely CMS vs Payload.

EmDash against other platforms

Optimizely CMS against other platforms

Open the CMS comparison tool to put up to six platforms in one table.

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