Number of pages that a website must have for SEO is something that cannot be standardised. It largely depends on the nature of your business, and keyword opportunities present that can yield traffic and revenue for your business.
If you are a local business with only up to 3 relevant and not very competitive keywords that could bring new customers, your business can compete in search results with just a 1-page website.
However, if your business offers, let us say 10 services, and operates nationally in a competitive niche, then a 1-page website may not be the best way to go about dominating SEO rankings in your country. Ideally, it is advised you at least have 1 dedicated page for each of your service.
Let us assume that a business has 5 key services and 15 unique keywords with good search volumes that it would like to get found for. In such a case the website should at least have around 15 pages with high-quality content that helps the website to rank well in search engines and get more traffic.
Before you start with web design and development services, it is important that you know all keyword opportunities for your business. Without this information, your website could easily miss on acquiring traffic. A comprehensive keyword research also enables you to build a good website architecture.
A lot of pages alone might not get you the results you need
Simply having a lot of pages on your website may not necessarily fetch great SEO results. Without highly sophisticated, original content, and managed search engine optimization services for increasing website authority, your online presence might as well be futile.
Websites like Wikipedia perform well in search results not only because of the number of pages it has but because of it’s high-quality content and its online authority as a credible website.
Having a lot of pages on your website that target the right keywords does not guarantee SEO performance.
But, it is the first step that you should take to achieve great SEO results as you move forward with SEO and content marketing services.