When looking at how effective your website is you first need to ensure you know what your main goal is. It is very important to ensure that you know what the main aim of the site is as hen you can gauge how effective your site is at ensuring that goal is met.
Many people focus entirely on getting traffic to a website and do not stop to consider if the website is designed in such a way that it will convert visitors into enquiries or sales.
If you want to sell products or services online then you will need to have an ecommerce website. You will want your visitors to make a purchase on the site via the online checkout so this process should be easy and straightforward.
A site can function really well and get found on the search engines with easy, but if site does not work as it should or the information the visitor needs is not easily accessible or available, then you may find that a very low percentage of your visors convert to sales or enquiries. Be sure to keep your site easy to navigate round and constantly review your main goal to ensure that it is achievable on your website.