Optimizely, formerly Episerver, competes with Adobe, Sitecore, Acquia, and Salesforce, along with the composable and MACH vendors like Commercetools and Contentful. Episerver itself came from the 2015 merger of EPiServer and Ektron, then acquired Optimizely in 2020 and took its name in 2021. Its customer data platform, the Optimizely Data Platform, came from the Zaius acquisition. Here is the lineage, the competitive field, and where the CDP fits.
I have worked in and around this platform since 2015, through the Ektron-era confusion, the Optimizely rebrand, and the shift toward composable. If you are trying to make sense of the names, the acquisitions, and who actually competes with whom, this is the map.
The Ektron, EPiServer, and Optimizely lineage
The naming history trips up a lot of buyers, especially anyone still searching for Ektron licensing or migration help. Here is the short version of how the platform got its current name.
- 2015: EPiServer (Swedish) and Ektron (US) merged under Accel-KKR ownership. The combined company kept the Episerver name, and Ektron customers were guided toward the Episerver platform.
- 2020: Episerver acquired Optimizely, the experimentation company.
- 2021: The whole company rebranded as Optimizely, retiring the Episerver name. I covered this in Episerver rebrands as Optimizely.
So if you remember Ektron or Episerver, the modern product is Optimizely. The DXP is the same lineage, with experimentation and applied AI now closer to the center than they were in the Ektron days.
Who are Optimizely’s main competitors?
Optimizely sits in the digital experience platform market. Its competitors fall into two camps: the traditional suite DXPs and the newer composable and headless vendors.
| Competitor | Category | How it compares to Optimizely |
|---|---|---|
| Adobe Experience Cloud | Suite DXP | Broadest integrated suite with a real-time CDP; heavier and more pro-code to implement. |
| Sitecore | Suite DXP | Cloud-native with fine-grained APIs and the Boxever CDP; needs more front-end investment. |
| Acquia (Drupal) | Open-source DXP | Built on Drupal with the Acquia CDP; open source with strong flexibility, less out-of-the-box. |
| Salesforce | CRM + commerce | Strong CRM, Commerce Cloud, and Data Cloud CDP; less of a content-first DXP. |
| Commercetools | MACH / composable | API-first commerce with unmatched flexibility; defers content, analytics, and testing. |
| Contentful / Contentstack | Headless CMS | API-first content delivery; no built-in experimentation, personalization, or commerce. |
Optimizely’s distinguishing strength is experimentation, which is the capability it is best known for, paired with a content management backbone that the pure headless and MACH vendors do not bring. For a deeper look at the commerce side, see Optimizely B2B commerce in the Forrester Wave.
What about the Episerver CDP?
The customer data platform people search for as the “Episerver CDP” is the Optimizely Data Platform (ODP). It came from Optimizely’s 2021 acquisition of Zaius and replaced the older Visitor Intelligence feature. ODP collects, unifies, and activates customer data across channels, which put Optimizely on par with the CDPs the other DXP vendors acquired around the same time.
- Optimizely: Optimizely Data Platform (from Zaius)
- Adobe: Real-Time Customer Data Platform
- Sitecore: CDP from the Boxever acquisition
- Acquia: Acquia CDP from the AgileOne acquisition
- Salesforce: Data Cloud, formerly Customer 360 Audiences
I wrote about the Zaius deal and the wider CDP land-grab in Optimizely acquires Zaius.
How to choose between them
The right platform depends on what you actually need. If experimentation and a unified content-plus-data platform matter most, Optimizely is strong. If you want best-of-breed flexibility and have the team to assemble it, the MACH vendors are worth a look. If you are weighing a DXP against an open-source CMS, I broke that down in Optimizely vs WordPress for enterprise.
Frequently asked questions
Who are Episerver’s competitors?
Episerver, now Optimizely, competes with Adobe Experience Cloud, Sitecore, and Acquia among the suite DXPs, with Salesforce on the CRM and commerce side, and with composable and headless vendors like Commercetools, Contentful, and Contentstack.
What is the Episerver CDP?
It is the Optimizely Data Platform (ODP), built from the 2021 Zaius acquisition. It replaced Episerver’s older Visitor Intelligence feature and provides customer data collection, unification, and activation across channels.
What happened to Ektron?
Ektron merged with EPiServer in 2015 under Accel-KKR. The combined company kept the Episerver name and moved customers toward the Episerver platform, which later became Optimizely after the 2020 acquisition and 2021 rebrand.
