WordPress web development is building websites on WordPress, an open-source content management system written in PHP. Unlike static HTML sites, WordPress separates content from design, letting non-technical users update pages, add blog posts, and manage media through a browser-based dashboard. Development work falls into three broad categories. Theme development involves creating or customizing the visual layer—either modifying existing themes like Astra or GeneratePress, or coding custom themes from scratch using PHP template files. Plugin development adds specific functionality, from contact forms to membership systems to SEO tools. Full-stack WordPress development combines both, often integrating third-party APIs, building custom post types, or creating headless setups where WordPress serves content to React or Next.js frontends. At Ottawa SEO Inc., we've run WordPress sites across our 500+ domain portfolio since 2014 because it offers unmatched flexibility for organic search. The platform gives granular control over URLs, metadata, schema markup, and content structure—critical for competitive niches in Ottawa, Toronto, and beyond. A typical build for a local service business runs $3,000–$8,000 CAD and includes custom theme work, speed optimization, and foundational SEO configuration. WordPress handles roughly 65–70% of all CMS-powered sites, which means abundant plugins, developers, and community support. The tradeoff is maintenance overhead—core updates every 2–3 months, plugin conflicts, and security patches require ongoing attention. Managed hosting like WP Engine or Kinsta handles some of this, but costs $30–$100 CAD monthly versus $8–$15 for shared hosting. The platform scales from single-page sites to enterprise operations like TechCrunch or Whitehouse.gov. Development complexity depends entirely on requirements: a brochure site might take 15–25 hours, while a multi-vendor marketplace could demand 200+ hours. The key is treating WordPress as a framework, not a turnkey solution, and planning for the technical debt that comes with any plugin-heavy stack.