You can produce the best content in your industry and still rank nowhere if your technical foundation is broken. Search engines need to find your pages, understand what they are about, and determine that they deliver a good experience before they will surface them in results. Technical SEO is not glamorous work, but it is foundational. Getting it wrong quietly suppresses everything else you do.
Crawlability: making sure Google can find your content
Before Google can rank a page, it needs to find and crawl it. The most common crawlability issues are pages blocked by robots.txt rules that were set up incorrectly and never revisited, pages that are not linked from anywhere else on the site (orphan pages), redirect chains that waste crawl budget and dilute link equity, and server errors that prevent Googlebot from accessing pages when it requests them. A monthly crawl of your site using a tool like Screaming Frog or Sitebulb will surface all of these issues before they become ranking problems.
The robots.txt trap
We have seen brands accidentally block their entire site from Google in robots.txt during a site migration and not notice for weeks because traffic declined gradually rather than immediately. Check your robots.txt file after every deployment that touches it.
Core Web Vitals: the performance signals Google measures
Largest Contentful Paint (LCP): Measures loading performance. The largest content element on the page should load within 2.5 seconds. Images and fonts are the most common causes of poor LCP.
Interaction to Next Paint (INP): Measures responsiveness. Every user interaction should produce a visual response within 200ms. Heavy JavaScript execution is the primary culprit for poor INP.
Cumulative Layout Shift (CLS): Measures visual stability. Elements on the page should not move around as the page loads. Images and embeds without explicitly defined dimensions are the most common cause.
Time to First Byte (TTFB): Not an official Core Web Vital but closely correlated with LCP. Server response time should be under 800ms. If it is not, look at hosting, caching, and database query optimisation first.
Core Web Vitals are not a ranking shortcut. They are a floor. Failing them does not destroy rankings but fixing them removes a headwind that is suppressing performance across your entire site.
Site architecture and internal linking
The way pages on your site link to each other is a signal to search engines about the relative importance of your content. Pages that receive many internal links are interpreted as more important. A flat site architecture, where every important page is reachable from the homepage within three clicks, ensures that link equity flows efficiently throughout your site. The most common mistake is a site that has excellent pillar pages with no internal links pointing to them from related content, leaving them essentially invisible to the ranking algorithm.
The internal linking audit
Export all your pages into a spreadsheet. For each page, count the number of internal links pointing to it. Any page with zero or one internal links that you consider important needs to be linked to from related content. This is one of the highest-ROI technical SEO tasks you can do.
Schema markup: speaking Google's language
Schema markup is structured data code that you add to your pages to help search engines understand what the content is about. For brands, the most valuable schema types are Organisation and LocalBusiness for brand information, Article for blog posts, FAQPage for pages with question-and-answer content, Product for e-commerce, and BreadcrumbList for navigation. Implementing schema correctly can unlock rich results in search, including star ratings, prices, event dates, and FAQ dropdowns, all of which increase click-through rates without requiring any improvement in ranking position.
International and multilingual SEO considerations
For brands operating across multiple countries or languages, hreflang implementation is one of the most commonly mishandled technical SEO elements. Hreflang tags tell search engines which version of a page to show to users in different countries and languages. Getting this wrong means users in Germany getting English content, users in the US seeing a Spanish version, or Google consolidating your multiple regional pages into a single one and discarding the others. If you have international pages, audit your hreflang implementation quarterly.