A call to action, or CTA, is the prompt that turns reading into doing. On a website it is usually a button, but it can be a link or simply a clear sentence with a phone number.
Good ones are specific and obvious. ‘Get a quote in 24 hours’ tells people what happens next; ‘Submit’ or ‘Learn more’ does not. There should usually be one main action per page, repeated where it makes sense.
For most local businesses the main action is contact: a call, a WhatsApp message, a form or a booking.
People do not hunt for your contact details; if the next step is not obvious, many simply leave. A clear, easy-to-tap call to action on every page is one of the simplest ways to get more enquiries from the same number of visitors.