• Upgrade Optimizely
• Upgrade to Optimizely Content Management System (CMS 12)

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Note

These system requirements are the latest and apply to versions higher than 7.5 of Optimizely Content Management System (CMS). See requirements and deviations below for product and service-specific requirements. See also Upgrade to Optimizely Content Management System (CMS 12) and Blog post: Five, Six, Seven, (Eight) - Out With the Old, In With the New .NET by Magnus Rahl.

Server requirements

Operating system

Any of the following:

• Linux
• Microsoft Windows Server 2022
• Microsoft Windows Server 2019 (End of support January 2024; extended support offered by Microsoft until January 2029)
• Microsoft Windows Server 2016 (End of support January 2022; extended support offered by Microsoft until January 2027)
• Microsoft Windows Server 2012 R2 (End of support; extended support offered by Microsoft until October 2023)
• All service packs are supported.

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Note

From CMS 12, Windows Server 2012 is no longer supported.

Web server

Any ASP.NET Core compatible hosting option.

Database

Any of the following:

• Microsoft Azure SQL
• Microsoft SQL Server 2022
• Microsoft SQL Server 2019 (End of support February 2025; extended support offered by Microsoft until January 2030)
• Microsoft SQL Server 2017 (End of support October 2022; extended support offered by Microsoft until October 2027)
• Microsoft SQL Server 2016 (End of support; extended support offered by Microsoft until July 2026)
• Microsoft SQL Server 2014 (End of support; extended support offered by Microsoft until July 2024)

All service packs are supported.

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Note

From update 163, Microsoft SQL Server 2008 is no longer supported.

Other requirements

• Microsoft ASP.NET Core (.NET 5 and higher)

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Note

In a production environment, an instance bound license is required for cloud-based solutions. For non-cloud environments, a permanent IP or MAC address is required.

Client requirements for editing

• Google Chrome browser, latest

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Note

Due to fast release cycles, Optimizely supports only the two latest versions of Google Chrome.

Client requirements for browsing

• Browser for viewing: The supported web browsers depend on the implementation. Most standard web browsers are generally supported.

Development and demonstration environment operating system

Any of the following:

• Linux
• Mac OS
• Microsoft Windows 11
• Microsoft Windows 10
• Microsoft Windows 8.1 (End of support; extended support offered by Microsoft until January 2023)
• Microsoft Windows Server 2022
• Microsoft Windows Server 2019 (End of support January 2024; extended support offered by Microsoft until January 2029)
• Microsoft Windows Server 2016 (End of support January 2022; extended support offered by Microsoft until January 2027)
• Microsoft Windows Server 2012 R2 (End of support; extended support offered by Microsoft until October 2023)

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Note

From CMS 12, Windows Server 2012 and Windows 8 are no longer supported.

Development tool

• ASP.NET Core SDK
• A compatible code editor / IDE

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Notes

• The Episerver Visual Studio integration installation requires IIS Express (included with VS 2015 and higher, can also be installed using Web Platform Installer).
• Always install the latest updates for Visual Studio.
• Visual Studio 2019 version 16.8 or higher is required for developing ASP.NET Core applications.

Database

Any of the following:

• Microsoft Azure SQL
• Microsoft SQL Server 2019 (End of support February 2025; extended support offered by Microsoft until January 2030)
• Microsoft SQL Server 2017 (End of support October 2022; extended support offered by Microsoft until October 2027)
• Microsoft SQL Server 2016 (End of support; extended support offered by Microsoft until July 2026)
• Microsoft SQL Server 2014 (End of support; extended support offered by Microsoft until July 2024)
• Microsoft SQL Server 2012 (End of support; extended support offered by Microsoft until July 2022)
• Microsoft SQL Server 2012 Express (End of support; extended support offered by Microsoft until July 2022)

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Notes

• The Episerver Visual Studio integration installation requires SQL Server Express (included with VS 2015 and 0 higher, and can also be installed using Web Platform Installer).
• From update 163, Microsoft SQL Server 2008 is no longer supported.

Product-specific requirements and deviations

Optimizely Digital Experience Platform (DXP)

See Requirements for Optimizely DXP.

Optimizely Forms

Optimizely Forms is only supported by MVC-based websites and HTML5-compliant browsers.