A food delivery service needs access to real-time menu information from all partner restaurants. They also need to share customer order information with the restaurants in real time. What should the…

Site reliability engineering is an operational discipline focused on system availability and reliability, not a technology for data exchange between applications.

An Application Programming Interface (API) provides a standardized contract that allows two independent software systems to send and receive data in real time over a network. A food delivery platform can call a restaurant's API to fetch current menu data, and the restaurant's system can receive order payloads via the delivery platform's API, enabling bidirectional, low-latency communication without either party needing to access the other's database directly.

A machine learning model analyzes or predicts from data; it does not provide the communication interface needed to share live menu and order information.

A multi-regional database stores and replicates data geographically but does not inherently provide the integration mechanism for real-time data exchange between separate organizations' systems.