TikTok wants the industry to fall back in love with creativity. Symphony Agent is built to do it faster.
The Global Head of Business Marketing has two messages for the industry. Selling both at once is the job.
I asked Isobel Sita Lumsden to name the most important thing TikTok announced at the Cannes Lions Festival. “You’re asking me to choose between my children,” she said, changing the subject.
TikTok’s Global Head of Business Marketing gave this interview one-to-one, between back-to-back sessions, fluent and warm. One line she offered without being asked and would happily have repeated: an instruction to the industry to fall back in love with creativity. She delivered it in the same week TikTok launched Symphony Agent, an AI tool built to turn a written brief into campaign-ready video in minutes. She sells both ideas at once: the romance of the craft, and the machine that shortcuts it.
Her job is to sell TikTok’s commercial story to those who decide where budgets go: the CMOs, media directors and holding company executives. The pitch is polished to the point of reflex. It is also a contradiction the platform has not resolved.
Isobel Sita Lumsden, TikTok’s Global Head of Business Marketing
hosts a session at The Cannes Lions of Creativity Festival, June 2026
A global brief that answers to the sales team
Lumsden has spent six years at TikTok, most of a career in B2B advertising, most of that European before the global remit. She recounts the shift with ease. She frames it as a matter of scale, and says the principle holds at any size. In Europe, the job is building consistency across markets that behave differently; what works in the UK will not necessarily work in Italy. The global version is a centrally scaled hub that puts the brand first, then leaves regional teams free to run the tactics that only make sense locally. She moved, on her own account, seamlessly between the two. She thinks in systems.
What those systems serve is sales. Her marketing, as she puts it, is built for scale and efficiency and kept tightly aligned to the sales strategy. That is the correct position for a business-marketing lead, and it reframes everything that follows. When she talks about creativity at Cannes Lions, she delivers a message that runs a function which exists to convert attention into revenue. In her hands, the work carries commercial weight before an artistic one.
TikTok’s whole Cannes Lions presence leaned on creativity as a moral good, a return to craft after a decade of programmatic efficiency. TikTok is not asking the industry to make better work for its own sake. It is arguing that better work, made on TikTok with TikTok’s tools, produces outcomes its competitors cannot match. The enthusiasm is genuine.
The tool that shortcuts the thing she is championing
Symphony Agent is the centrepiece, and she calls its creative developments genuinely capable of making a huge difference to advertisers. TikTok describes it as agentic AI with cultural intelligence, built to produce TikTok-first campaigns at speed. It combines a brand’s goals with signals from top-performing content and live trends, then generates video, surfaces existing creator material and points to the creators worth working with.
It runs across three platforms. In Symphony Creative Studio, a brief becomes a storyboard through a chat interface. In Content Suite, its search reads thousands of clips to find the ones that fit. In TikTok One, it handles creator discovery by filtering the marketplace based on audience overlap and content style. TikTok has wrapped the system in AI labelling, invisible watermarks and moderation filters.
For Lumsden, this is the argument behind the rhetoric, the idea she reached for when she would not name a favourite: a constant loop between what brands ask for and what TikTok builds, with AI now inside every core product. Symphony Agent is that loop for the people she sells to.
The difficulty is the message sitting next to it. The same week that unveiled a system for compressing creative production asked marketers to rediscover the slow, human part of the work. The tools handle speed, she argues, and humans stay central to the creative strategy. It is the answer every AI vendor now gives, and reasonable enough. But it is also the claim the industry will test hardest. A machine that writes a storyboard from a product brief is not doing what TikTok spent the week celebrating: a person making something because it means something to them. To her credit, she did not pretend the gap was closed. The company is betting both statements can be true at once: that creativity is sacred, and that most of it can be produced by prompting.
The collapsed funnel is the argument that lands
Underneath the creativity message is a harder commercial claim, and it is the one media buyers came for. Asked whether TikTok can take a larger share when spending is so concentrated among the three largest platforms, Lumsden did not argue for displacement. TikTok is complementary, she says, and full-funnel: strong on brand, now pushing into the mid- and lower-funnel where conversion happens. The platform has dressed this up in a campaign called Funnel HQ, with regional “chief funnel officers,” and she plainly enjoys the joke. The serious purpose beneath the joke is to tell planners that TikTok is no longer only a brand play.
Told that the funnel felt like tired language (first click, last click, a model the business has half-outgrown), she agreed without hesitation. The terminology is not going away, she said, and she clearly wishes it would; she and her team wanted to talk about loops, or about no funnel at all. What she offers instead is the collapsed funnel: on TikTok, the distance between discovery and action can close in a single moment, with someone finding a product and buying it without the staged journey the funnel assumes.
The same instinct runs through how she talks about search, and here she is unmistakably a user. TikTok is not a social graph, she says; it is a discovery graph: people arrive without checking who they follow, ready to be shown something. She lights up describing her own habit of searching a city before a trip and getting real people showing real places instead of a page of links. For brands, she frames it as an opening. For TikTok, it is one more route from discovery to purchase with the middle removed.
That compression is the tension the creativity message never escapes. The craft Lumsden wants the industry to fall back in love with is slow and personal, built over time. The platform she sells runs on collapsing exactly that distance. Symphony Agent and the collapsed funnel are the same instinct applied to different problems: take out the steps, speed up the outcome. The creativity campaign asks the industry to value the steps.
Built with the holding companies it competes with
TikTok does none of this alone, she is keen to stress. TikTok’s approach, in her phrase, is to build with the industry rather than for it. “We love partnerships,” she says. Canva, whose integration TikTok showcased during the week, is both a creative and a marketing partner, used by thousands of brands inside TikTok’s own tools. WPP and Dentsu sit on the same list. The pattern is a platform threading its commercial strategy through the agency groups and software companies it also competes with for attention and budget, then treating that overlap as leverage.
It suits her. She is a relationship marketer first, a product one second, more animated by who TikTok builds with than by any single feature. But it also concentrates the risk. If the holding companies come to doubt TikTok’s argument about creativity and compression, they are close enough to the product to say so, and central enough to its distribution to matter.
She left for the next interview with two instructions for the industry, and they do not sit easily together. Fall back in love with creativity, and let the platform close the gap between an idea and a sale until barely anything is left. Her task for the coming year is to make the market believe those are one argument. TikTok has built the tools to win on speed. At Cannes, it insisted it can win on craft as well, and whether both can be true is the question it has set itself.
