A meta description should solve one problem: convince someone scanning search results that your page has the answer they need. Start by stating what the page delivers in the first 10–15 words, then add a compelling detail or benefit that differentiates you from the nine other results. Keep it between 150–160 characters. Google truncates around 155–160, but mobile displays can cut earlier. If you go to 165, you risk ellipses chopping off your call-to-action. Include your primary keyword once, naturally, because Google bolds matching terms in the SERP, which increases visibility. But never force it twice or write for robots. Avoid generic phrases like "Learn more about" or "We offer the best." Instead, tell them what they'll know, save, or accomplish. For a local HVAC client in Ottawa, "Book same-day furnace repair in Ottawa. Licensed, 24/7 service, upfront pricing" works better than "We are Ottawa's leading HVAC company with years of experience." Every page needs a unique meta description. Duplicate descriptions waste the chance to target different intents. Your homepage might emphasize breadth ("SEO audits, link building, and local optimization for Canadian businesses"), while a service page zeroes in on one outcome ("Our technical SEO audits identify crawl errors, indexing issues, and Core Web Vitals problems in 48 hours"). Meta descriptions don't directly affect rankings, but they heavily influence click-through rate, which does. A 2% CTR lift on a keyword with 10,000 monthly impressions means 200 extra visits. At Ottawa SEO, we A/B test descriptions on high-impression pages every quarter because even small wording changes shift CTR by 15–30%. Finally, write them after the page content is done, not before. You need to know exactly what the page delivers to summarize it honestly. Misleading descriptions get clicks but trigger instant bounces, and Google learns to demote pages with high pogo-sticking. Match the promise to the content, every time.