May 20, 2025 – Singapore: Global marketing and advertising powerhouse Dentsu has appointed Susannah Llewellyn, former Vice President of Global Partnerships at InMobi, as its new Integrated Client President for the Asia-Pacific (APAC) region. The strategic appointment underscores Dentsu’s commitment to delivering seamless, end-to-end client solutions across the rapidly evolving APAC market.
Llewellyn brings over two decades of experience in digital media, strategic partnerships, and integrated marketing. At InMobi, she was pivotal in forging global collaborations and scaling innovative adtech solutions. Her expertise spans across mobile advertising, data-driven marketing, and omnichannel customer experiences—capabilities that align closely with Dentsu’s growth vision.
In her new role, Llewellyn will be responsible for deepening client relationships, spearheading integrated brand strategies, and driving performance across Dentsu’s creative, media, and CXM (customer experience management) capabilities.
“I’m excited to join Dentsu at a time when the agency is redefining integrated marketing for a connected world,” said Llewellyn. “I look forward to collaborating with our teams across APAC to deliver innovative solutions that truly move the needle for our clients.”
Based in Singapore, Llewellyn will report directly to Rob Gilby, CEO of Dentsu APAC. Gilby expressed confidence in her leadership and impact.
“Susannah’s unique blend of client-centricity, digital expertise, and proven leadership makes her an invaluable addition to our APAC executive team,” said Rob Gilby. “As we continue to evolve in this dynamic region, her strategic insight will be critical in helping our clients achieve sustainable growth.”
The move reflects Dentsu’s broader strategy of strengthening its leadership bench to meet rising client expectations in a fragmented marketing landscape. With APAC representing one of the most diverse and high-growth markets globally, Llewellyn’s appointment is seen as a bold step in bolstering Dentsu’s integrated approach to client servicing.
Before InMobi, Llewellyn held leadership roles at global organizations including Publicis Groupe and AOL, where she built a strong reputation for scaling digital-first solutions and building cohesive brand ecosystems.
Read more: Germany’s Top 10 Women in Tech to Watch 2025