Fewer than you probably think on the top-level navigation. More than you might guess once you go deeper.
At minimum, a home page that names who you serve, what problem you solve, and how you're different. An about page introducing the people who actually do the work. Services pages that go deep on what you do, not a surface-level menu of ten different things. And a contact page that makes it easy to start a conversation.
That's the core. Many service firms stop there and do just fine.
Most firms benefit from adding a few more pages once the core is nailed. A case studies page with a handful of real engagements showing the kind of work you do and the results you produce. An insights or articles page for long-form content that demonstrates your expertise to both humans and search engines. And an FAQ page, which has become much more strategically useful in the AI era.
An FAQ page is one of the best investments a modern service business website can make. It lets you address the real questions your prospects have, in your own words, in a way that builds trust before they ever talk to you. It also gives AI models like ChatGPT and Gemini structured content they can actually use when people ask questions about your industry. As more buyer research shifts from traditional search to AI, your website becomes the place you tell AI what your firm is about, so it can pass that information along when someone asks. An FAQ page, combined with the right schema markup, is one of the clearest signals AI can consume.
Detail subpages are where a lot of the SEO and AI visibility work actually happens. If you offer multiple services, each one deserves its own detail page. Each page becomes a focused piece of content that search engines and AI models can point people to when they're researching that specific topic. Same logic applies to geography. If you serve several metro areas or regions, each one should have a page describing the services you offer there, written with the local context the prospect would expect. A firm with five services across three markets gets fifteen detail pages out of the arrangement, and each one gives them another opportunity to show up when someone searches.
You also need the usual legal pages (privacy policy, terms of service, cookie disclosure if applicable) to stay compliant, especially if you're running any digital advertising. These don't do any marketing work, but you can't skip them.
The pages most firms get wrong are the self-indulgent ones. A "Why Choose Us" page can be valuable if it's doing real work, but it's usually better when the reasons are woven through every other page on the site. Ideally, every page makes part of the case. A "Process" page with a step-by-step breakdown rarely earns its place. Nobody wants to read a play-by-play of how you operate. If your process matters, a short mention on the services page will do. A "Values" page is almost always worse than no values page at all. Anyone can list core values. The better move is to leave them off the site entirely and prove them through the way the whole thing is built and what it says. Keep your core values internal, then show them. A separate "Team" page is usually redundant when a short team section on the about page will do the same job.
Every page should answer a real question the prospect is asking, support your lead generation, help you show up in search and AI, or meet a legal requirement. If a page doesn't do at least one of those, cut it. Every word needs to be working.