RFC 7276 defines the framework for passive performance monitoring, providing guidelines for collecting and analyzing network performance data in network assurance.

Placing an agent at the default gateway allows for monitoring and diagnosing issues related to local network connectivity effectively.

The primary objective of network optimization recommendations is to improve network performance, efficiency, and reliability by implementing best practices and addressing identified issues and bottlenecks.

API integration facilitates seamless data exchange between Cisco technologies and third-party applications, enhancing interoperability and extensibility.

"API" stands for Application Programming Interface, which facilitates the exchange of data and functionality between different software applications, enabling seamless integration and interoperability.