Static websites are tough to edit and has a lengthy process. One has to download the HTML page from the server to change and upload the content back to the server. The entire process requires an expert webmaster with an understanding of how the HTML works, which means you will need a developer every time for changes.
Modern dynamic websites on the other hand, are equipped with web-based CMS. It offers a separate space on the website for editing, adding or uploading pictures or pages. The content of the page is generally stored in the database located on the server, which is produced in real time when requested by page visitor. The CMS encompasses server side caching engine which stores temporal copies of the page content in order to speed-up the real-time page generation. 

Search engines love the pages that have unique content and are linked to relevant pages. While relevance is one of the major reasons for traffic traction, it could become really difficult to find all relevant content for each page in a large website. A dynamic script covers this drawback effectively. It examines each and every page in the database and generates a dynamic list with the most relevant content. 

In dynamic website you also get an option to customize your product search thoroughly as per your requirements. A web based product administrator is generally used for managing all the products in a Dynamic website. All you need to do is add the new product, and choose an appropriate product listing and category. Once you are done with it, the details are generated dynamically. 

A dynamic website lets you dynamically extract updated information from the third party server when needed. For instance, if currency exchange or weather forecast is needed, the developer would have to write a code that contacts third party server in the real-time and extract the updated information from the source. Where a static website lacks on this feature, the server side scripting on which dynamic websites allows it to get the data effectively. 

With a dynamic website, you get an option to add news articles that are displayed as a list sorted according to date. In certain cases a small version of that list displayed in the side column of each page. It is only possible with Dynamic website approach; else you would have to edit every page whenever a new addition will be made to the list. What More? Usually, each news article has a comment section at the bottom of the page. All the comments made by viewers are displayed in the content manager, but only the comments approved by the website administrator are displayed on the website. 

Search option becomes really vital in case your website owns plethora of product pages. This assists the user to find the product/service he is looking on the page easily. The option is present exclusively in the dynamic websites, as the server has to check each page present on the database to extract the information.
Besides simply searching, the “search on your website” also examines the most relevant pages and the search listings are sorted on the basis of this relevancy.