Optimizely is a digital experience platform (DXP) that provides tools for experimentation, content management, and commerce, enabling organizations to create, personalize, and optimize digital content and customer experiences across websites and apps. Key features include A/B and multivariate testing, website personalization, content management systems (CMS), digital commerce capabilities, and feature flagging for controlled feature rollouts. The platform integrates these tools to help businesses drive data-driven initiatives, improve user engagement, and achieve better business outcomes.

What is the latest version of optimizely?

The latest Optimizely version depends on the product. For Optimizely CMS, the latest major version is 12, with ongoing releases to the 12.x series (e.g., 12.22.4 and 12.32.4 released February 2025). For SDKs, the current Long-Term Support (LTS) version is 5.2.2508.2289+lts, published September 2025.

What's OPAL in Optimizely?

Opal transforms digital marketing workflows by blending automation, AI-driven insights, and a deep understanding of user behavior. By integrating it into your Optimizely platform, you gain a comprehensive toolkit to enhance website performance, increase ROI, and deliver exceptional user experiences.Create AI agents for any use case you dream up, orchestrate them across your workflows, and scale your impact—without scaling costs.

Umbraco is a cloud-based open source content management system that allows for seamless editing and gives users a personalised digital experience. With a variety of packages and installs, and an intuitive interface, Umbraco has a very low barrier to entry allowing you to generate effective campaigns with minimal training. This system is built using the dot NET framework from Microsoft.

What's the latest version of Umbraco?

The latest version of Umbraco CMS is Umbraco 17, released in November 2025 and now the main long-term support (LTS) version. This release is designed to give organisations stability, predictable support and a modern, secure foundation for the years ahead. It runs on Microsoft’s latest .NET 10 LTS platform, ensuring strong performance and future-proof compatibility.

Development & Technology | Umbraco | Optimizely

Our Development

We are a trusted solution partner for leading CMS platforms, including Umbraco and Optimizely. From content-driven websites to complex, enterprise-grade digital platforms, we deliver scalable, secure, and flexible solutions tailored to organisations of all sizes. Each platform gives us the freedom to build systems that evolve with your business — today and into the future.

Our dedicated development teams bring deep experience across Umbraco and Optimizely CMS development, working closely with you to design, build, and support platforms that perform. Whether you’re launching a new website, integrating with existing systems, or planning a platform migration, we ensure your solution is robust, extendable, and future-ready.

We are a close-knit team of strategists, creatives, and website developers with over 15 years’ experience delivering intuitive digital platforms. Our work focuses on user-friendly interfaces, future-proof technology, and rigorous security practices — including thorough penetration testing — helping our clients build digital experiences they can rely on.

Optimizely Development

dotcraft are a Bronze Optimizely Partner, creating high-performing digital solutions and experiences using Optimizely’s fast, scalable, and secure platform. Optimizely provides the foundations; we build tailored solutions around your business needs, delivering robust platforms that grow with you.

Specialising in strategy, technical development, and UX, our Optimizely-certified developers deliver end-to-end solutions that balance business goals with customer needs. Through AI-driven personalisation, automation, and third-party integrations, we simplify complex processes and create clean, intuitive user experiences designed to convert.

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Umbraco Development

We are a trusted partner of renowned Open Source CMS, Umbraco. This lightweight, extendable and intuitive platform is suitable for projects of all sizes. Its flexibility gives us the freedom to deliver solutions that scale to you. We have a dedicated Umbraco Development team available to work with you on your next big project.

We are a small team of strategists, creatives, and developers who are available to help you. For over 15 years we have been creating intuitive digital platforms, with a wide range of benefits such as: friendly interfaces, future proof technology, and thorough security penetration testing.

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Case studies

Optimizely Cloud DXP

+35% Revenue

Over 15,000 content items to migrate, Dotcraft used a custom migration framework to ensure a smooth transition to the new platform. Along the way, content was optimised for SEO and performance, improving discoverability and ensuring that the site operated at peak efficiency.

Goodwood

Umbraco + Content migration

+50% Reduction in page load

The design and build approach of the new website means the branding can continue to flourish across multiple departments of the college and be updated as and when needed with minimal fuss.

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