16IDC is a global resource directory for developers and businesses planning, building, and operating websites. It brings together service providers and practical guidance in one place, helping users explore and compare options across the website development ecosystem. The platform lists providers in areas including domain registration, cloud servers and VPS, CDN, content management systems, payment platforms, security, analytics, AI, collaboration, design resources, and automation. Its directory also covers tools for project management, DevOps, DNS, and self-hosted services.

For people starting a website from scratch, 16IDC offers an AI website-building center organized around ten stages, from requirements analysis and domain planning to infrastructure, deployment, frontend and backend development, performance, SEO, monitoring, and security. Guides, templates, prompts, and code examples support these workflows. The site also publishes articles and industry reports to help users understand technology trends and evaluate providers. Additional offerings include AI website-building consultation, promotional information, and tools for businesses operating internationally.