Yes, it is possible to host an eCommerce website on shared web hosting. Shared web hosting is the most affordable option and is suitable for small to medium sized businesses starting an eCommerce website. However, it's essential to choose a reliable hosting provider that offers robust security features such as SSL certificates, firewalls, malware protection, and more to secure customers' sensitive data like payment and login information. Additionally, shared hosting plans might have limitations on resources and bandwidth, so it's essential to ensure that your eCommerce website's traffic and resource usage requirements do not exceed your hosting plan capabilities.