Caesar7 offers a full spectrum of bespoke design and development services using a bespoke e-commerce platform which you can host anywhere. Shopify and other similar solutions are basically web-based applications which you rent to build your own website. You cannot move to a different provider with Shopify. You do not receive any personalized help (unless you are on a premium plan which costs more than it should). You do not even get a copy of your e-commerce project - you rent it until the end.
There are other solutions, such as Wordpress, Magento, Drupal, Joomla, but if you are not a developer - they should not concern you.
An in-depth comparison of web development solutions is on the first page of our website, under the "Why us" section.