SEO for Subdomains: How to Optimize and Rank Subdomains in 2025

If you’ve ever wondered how subdomains affect your website’s SEO, you’re not alone. Many site owners ask: “Should I use a subdomain or subdirectory?” or “Will Google rank my subdomain the same as my main domain?” The answer isn’t always black and white — but one thing is clear: SEO for subdomains requires a unique strategy. In this guide, you’ll learn how subdomains work, their impact on SEO, and best practices for optimizing them in 2025 and beyond. What Is a Subdomain? A subdomain is a subdivision of your main domain used to organize and separate content. Think of it like a child site under your main website. Here’s an example: Main domain : www.example.com Subdomain : blog.example.com or store.example.com Each subdomain can host entirely different content, target different users, or serve specific business purposes. How Subdomains Impact SEO Search engines like Google treat subdomains as separate entities from your...