K:LDN 2026 opened to more than a thousand merchants and set a clear vision with several key product announcements: Klaviyo’s expanding toolset has become powerful enough to let a brand of any size operate at a scale that once required a full team. The promise of personalization, long marketed but rarely delivered, has finally become something all brands can ship.

Phillip Jackson sits down live with Klaviyo CMO Jamie Domenici and IDC research director Roger Beharry Lall to break down the trends that are shaping the future of retail and Klaviyo as an organization: 

the slow collapse of the linear funnel as shoppers move across LLMs, social, and search; the evolution of AI from a disparate chat window to an embedded experience where marketers work; and how the public beta of Klaviyo’s new agent, Composer, is helping marketers create campaigns rooted in data from hundreds of thousands of merchants.

Market Like It’s Hot

Key takeaways:

• A year ago brands were still learning what AI was; this year, they’re ready to put it to work.
• Klaviyo’s Composer moves the agent out of the chat window and into campaigns, flows and channels where marketers operate.
• Klaviyo's edge is context: customer history plus best practices drawn from 200,000 brands, unified in one data platform.
• The funnel is no longer a controlled path; discovery, advertising, and commerce increasingly share the same LLM.
• European merchants weigh privacy and compliance more heavily, which favors vendors who have already solved for regulation.
• [08:16] "Six months ago, you couldn't buy in an LLM. Now you can actually have more visibility into what your customers are doing in an LLM, how they're interacting." (Jamie Domenici)
• [07:05] "77% of consumers would prefer to click through from the recommendations in their agentic searches, rather than have the agent do a purchase for them. They want control." (Phillip Jackson)

In-Show Mentions:

• Learn more about Klaviyo’s AI marketing agent, Composer
• Learn more about Klaviyo

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