E-commerce infrastructure typically includes which of the following?

The correct answer highlights the core components of e-commerce infrastructure, which consists of consumers' browsers, application servers, and database servers. In an e-commerce environment, the consumer’s browser serves as the interface through which users interact with the online store. The application servers process user requests, host the e-commerce application, and manage the logic for transactions and user sessions. Meanwhile, the database servers store critical data, including product information, customer details, and transaction records.

This combination of elements is crucial for enabling seamless transactions and providing a responsive experience for users. Together, these components ensure that data flows securely and efficiently from consumers to the servers and back, facilitating the entire e-commerce process, from product browsing to payment processing.

The other choices fail to capture the full scope of what constitutes e-commerce infrastructure. Focusing solely on physical security measures would ignore the technological components essential for online interactions. While mobile payment systems and ATMs are relevant to financial transactions, they do not represent the typical architecture of e-commerce. Similarly, restricting the infrastructure to just application and database servers omits the critical role of consumer interfaces provided by browsers.