William Parr

With seventeen years of experience in web development, William serves as Lead Engineer and Optimizely Chapter Lead at iO, where he specializes in translating client requirements into scalable software solutions. He bridges the gap between business needs and technical implementation, guiding development teams in building robust digital platforms. His expertise spans back-end development, enterprise content management, and digital experience platforms (with specialization in Optimizely, Umbraco, and DXP architectures). William is an active contributor to the Optimizely community through event organization, forum participation, and technical discussions. He holds multiple certifications including Optimizely Certified CMS Developer, Optimizely One Technical Sales Accredited, and Umbraco Certified Master, reflecting his commitment to staying at the forefront of content management and digital experience technologies.

Session Topic

Headless CMS showdown 

A strong digital experience is more important than ever. The CMS is a crucial link in this process. But which platform best suits your needs? In this panel discussion, we'll outline the capabilities and strengths of Sitecore, Contentstack, and Sanity.

We'll discuss the key differences between these headless CMS platforms:

• How do developers experience the tools and workflows?

• How intuitive is the content editing for editors and marketers?

• And how well do the systems integrate within a modern, composable DXP landscape?

Gain practical insights to make an informed choice, based on our experience with the capabilities, ease of use, and integration strength, not on marketing claims.