Hi Arnav,
I think it is an extremely crucial factor for an eCommerce website to have an SSL certificate installed on the website. Most of the people around the world check the security of the website by clicking on the icon displayed in the browser. For an eCommerce website, this factor is of utmost importance. Apart from having an SSL certificate, I think that in order to maintain privacy and security every website owner should make sure that the website is using strong and complicated passwords everywhere.