TOS (TopOnSeek) Agency

Based in Ho Chi Minh City, Vietnam, TOS (TopOnSeek) was founded in 2016 and works with a team of 11-50 people. The agency structures part of its offering around specific industries, listing healthcare, automotive, e-commerce, banking, beauty, and fintech among its sector focuses, indicating client work spans both consumer and financial verticals. Its site also references international SEO services, suggesting the agency takes on clients beyond the domestic Vietnamese market. The core service lineup covers Search Engine Optimization, Conversion Optimization, Digital Strategy, Ecommerce Marketing, and Pay Per Click, alongside dedicated Data Intelligence and Web/App Development offerings. TOS has also built out a GEO (Generative Engine Optimization) practice, with separate service lines for AIO and AEO, plus an AI Visibility Checker tool, pointing to a focus on how brands appear in AI-driven search and answer engines rather than traditional search results alone. Supporting content includes onpage and technical SEO checks, website traffic analysis tools, and industry-specific service pages such as SEO for ecommerce, healthcare, banks, real estate, travel, and spas. The agency also publishes pricing information for its SEO services and maintains case studies documenting past engagements, alongside a blog covering technical SEO topics and AI-related tools for content, image, and visual production costs.