

Facebook Postpaid Ad Account: How It Works and When You Should Use It
A Facebook postpaid ad account is a billing model that lets advertisers run campaigns first and pay later, instead of preloading a balance before ads…
CEO Henry Duy is a leading digital marketing expert and the founder of both the GDT Group parent ecosystem and Brand GDT Agency.
Under his strategic direction, the GDT Agency brand has developed into a premier global agency, delivering highly reliable ad account rental services (including Facebook, Google, and TikTok agency accounts) that help scaling brands optimize media buying and minimize compliance risks.
The table below outlines key personal information about Henry Duy and provides a brief introduction to his background and professional profile.
| Full Name: | Doi Duy Khanh |
| Professional Name: | Henry Duy |
| Year of Birth: | 1996 |
| Nationality: | Vietnamese |
| Gender: | Male |
| Current Position: | Founder of GDT Group and CEO of Brand GDT Agency |
Beyond these profile details, Henry Duy’s professional journey reflects the key milestones that have shaped his leadership, business perspective, and professional expertise.
Below is the academic foundation that supports Henry Duy’s expertise in both digital marketing mechanics and business administration:
| Time Period Institution Program | Major |
| 2018 – 2022 | Performance Marketing Academies Digital Marketing & Conversion Optimization |
| 2022 – 2023 | Executive Leadership Hubs Corporate Strategy & Multi-Brand Management |
| 2026 | Present Tech Institutions Information Technology & Applied AI Systems |
Henry Duy began building GDT Group in 2021 with the goal of creating an integrated business ecosystem that combines digital services with operational capabilities across multiple industries.
Under his leadership, the group has expanded into digital marketing and information technology while maintaining a focus on sustainable business development. The following timeline highlights the experiences that have defined his career and contributed to his current role.
| Company/Brand | Position | Period | Industry |
| Brand GDT Agency | CEO Brand | 2021 – Now | Digital Marketing |
| Fanmen | Co Founder | 2023 – Now | Male cosmetics |
| GDT Group Service | Co Founder | 2025 – Now | Business Group |
| GDT Home | Co Founder | 2025 – Now | Household Goods |
| BeautyTech | Co Founder | 2025 – Now | Beauty |
| GDT Group Tech | CEO & Founder | 2026 – Now | Information Technology |
Over the years, these experiences have shaped a strong foundation in performance-based marketing and digital transformation, which continue to define Henry Duy’s professional expertise today.
Throughout his professional journey, Henry Duy has developed practical expertise across several disciplines that support business growth and digital transformation. The following areas represent the core capabilities that define his professional work today.
Together, these areas of expertise reflect Henry Duy’s multidisciplinary approach to business growth, combining marketing, technology, and strategic leadership to help organizations achieve sustainable success.
Henry Duy’s expertise and leadership have contributed to a series of significant milestones across GDT Agency and the broader GDT Group ecosystem. The following achievements highlight the impact of his leadership and professional experience.
These achievements represent important milestones in Henry Duy’s career, while his continued focus remains on building sustainable businesses, driving innovation, and creating long-term value for clients and partners.
“Sustainable business growth is built through strong foundations, disciplined execution, and long-term value creation.”
Henry Duy believes that sustainable business growth is built on strong digital infrastructure, data-driven decision-making, and continuous innovation. His long-term vision is to strengthen GDT Agency as a trusted global partner by providing reliable Facebook agency accounts, Google agency accounts, TikTok agency accounts, and strategic performance marketing solutions that help businesses scale across major digital advertising platforms.
To achieve this vision, Henry Duy focuses on expanding GDT Agency’s advertising infrastructure, enhancing service quality, and continuously improving its portfolio of Meta, Google, and TikTok agency account solutions. He also emphasizes developing practical advertising strategies, building strong teams, fostering long-term partnerships, and adapting to emerging technologies that create sustainable value for clients.
Looking ahead, Henry Duy remains committed to strengthening GDT Agency’s position as a trusted provider of agency advertising solutions while helping businesses achieve long-term growth through secure advertising infrastructure, continuous innovation, and measurable advertising performance.








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