OpenCart offers a wide range of extensions, a powerful cataloging functionality, and a mechanism for order processing. But it relies on plugins to deliver performance and functionality, including some key processes such as caching. Also, it is hard to customize a store built on Opencart. Arizon Digital offers smooth migration from OpenCart to Big Commerce, which addresses the shortcomings, with plenty of out-of-the-box functionality, in-built tools, and vast customization options.