9thCO is a Canadian digital agency that has helped businesses strengthen their online presence since 2013. The agency specializes in modern content management systems and e-commerce, including headless implementations, Next.js development, and infrastructure modernization. Its services also include technical search engine optimization (SEO), AI-search readiness audits, answer engine optimization (AEO), and data-driven pay-per-click (PPC) campaigns.

Combining digital marketing with modern web technologies, 9thCO creates customized solutions for organizations ranging from small businesses to multinational corporations. Its capabilities span full-stack web and mobile app development, user interface and experience design, composable design architecture, analytics and tracking, and copywriting. The agency also supports digital transformation, digital experience platform integration, and e-commerce projects using platforms such as Shopify and Prismic.

9thCO describes its approach as tailored, agile, and guided by data, with ongoing analysis used to improve results. It aims to build long-term client relationships and serve as a strategic growth partner, helping organizations enhance their brand, customer experience, and sales. The agency is based in Toronto, Ontario.