What is the term for ensuring that an E-Commerce website is user-friendly and secure?

The term that most accurately describes ensuring that an e-commerce website is user-friendly and secure is user experience. This encompasses the overall satisfaction of users when they interact with a website. Enhancing user experience involves designing a site that is intuitive, easy to navigate, and able to facilitate transactions securely, which is crucial for maintaining trust and encouraging repeat business.

Additionally, aspects such as website load times, mobile responsiveness, and clear pathways for users to complete actions (like making a purchase) all play a role in creating a positive user experience. Security measures such as SSL certificates, secure payment gateways, and data protection protocols are also integral parts of ensuring the site is both user-friendly and secure, as they build trust and confidence among users.

While the other options might relate to parts of the broader picture, such as website design focusing on aesthetics and layout or digital marketing involving promoting the site, they do not fully encompass the comprehensive objective of creating a secure and pleasant user experience on an e-commerce platform.