SEO in marketing means Search Engine Optimization. It's the discipline of making your website rank higher in Google, Bing, and other search engines for queries your customers actually use. Unlike paid ads that disappear when your budget runs out, SEO builds a compounding asset that drives traffic month after month without ongoing ad spend. Marketing teams value SEO because it targets bottom-of-funnel intent. Someone searching "Ottawa accounting firm for small business" is closer to hiring than someone scrolling Instagram. You're intercepting demand that already exists, not creating it from scratch. The ROI window is longer than PPC—typically 4–8 months to see meaningful traction—but the cost per acquisition drops dramatically once you rank. SEO breaks into three buckets. Technical SEO ensures Google can crawl and index your site properly: fast load times, mobile usability, clean code, proper redirects. On-page SEO means optimizing individual pages with target keywords, quality content, internal links, and structured data. Off-page SEO is mostly backlinks—other websites linking to yours, which Google treats as votes of authority. You need all three. Great content on a broken site won't rank. A fast site with thin content won't either. At Ottawa SEO Inc., we run a 500+ domain portfolio, so we see what moves the needle across industries. The biggest mistake businesses make is treating SEO as a one-time project instead of an ongoing channel. Google's algorithm updates constantly. Competitors publish new content. User behavior shifts. An agency that audits your site once and disappears isn't doing SEO—they're doing a technical cleanup. The marketing value is simple: SEO owns the keywords that matter to your revenue. If you sell commercial HVAC in Toronto and don't rank for "commercial HVAC Toronto," you're leaving money on the table every single day. Paid search can fill the gap short-term, but you'll pay $15–80 per click in competitive industries. SEO gets you those same clicks at the cost of content and links, which scale better as you grow.