Ecommerce websites used various scripts to display different products which include images and some time video clips as well. So the working of an ecommerce website depends on the hosting server it must be fast and should have enough space to support all these images and other website content. Another important aspect of an ecommerce website is that it is designed to generate business, which means you need a lot of visitors out of which you can get many customers. To manage those visitors you need maximum bandwidth so that your website won't crash in peak hours.
Dedicated server provide unlimited space & bandwidth, which means you can upload as many images as you want and you can manage your content efficiently using a control panel provided by your host. Unlimited bandwidth allows you to manage maximum traffic on your website. Most of the people who are not hosting their site on dedicated server have to face downtime because of server overloading, which results in the loss of customers. So if you are thinking to save money by hosting your website on shared server trust me it'll cost you much more in term of customer loss.
Beside this dedicated servers are housed in data centers which ensure you maximum server uptime as they monitor it 24/7. Also your server remains secure as they prevent an unauthorized access by configuring your security properly.
Quick response time is another factor which is of great importance in term of ecommerce website. These days each company has so many competitors on the web, so if your site is responding slow, the visitor might move on to the next option, instead of waiting. Maximum bandwidth with dedicated server ensures you quicker data transfer rate so that people can access it fast.
With dedicated server hosting you'll get 24/7 client support which you might not get with shared hosting plan. As you have an ecommerce website so it remains to be live 24/7 but in case of any issue you need to contact your host, that's why having a 24/7 support gives you an option to contact your host at any hour.
All these factors play an important role in term of ecommerce website performance. For best performance of ecommerce website dedicated server hosting is highly recommended.