Short answer
A one-page website is a good choice for a small business, local service, new project or offer that can be explained in a few sections.
When does it fit?
When the main goal is to present the offer quickly and guide the user to contact. Sections should follow a logical order: promise, services, benefits, proof and contact.
SEO on one page
One-page can support SEO if the topic is narrow and consistent. If there are many different services, separate pages usually provide better visibility.
Speed and contact
A lightweight one-page site with good mobile usability, a form and technical SEO is often a strong first step toward a professional online presence.
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