Description: Inter-domain Communication refers to the protocols that facilitate communication between different domains in a network. In the context of computer networks, a domain can be understood as a set of resources that share the same management and security policies. These protocols are essential to ensure that data can be effectively transmitted between different systems, which may be located in different networks or even in different organizations. Inter-domain communication is crucial in environments where collaboration between multiple entities is required, such as in companies operating in various regions or in systems that integrate services from multiple providers. Inter-domain communication protocols ensure that information is exchanged securely and efficiently, using standards that allow interoperability between different technologies and platforms. This includes address management, authentication and authorization, as well as data encoding and formatting. In summary, inter-domain communication is a fundamental component of modern network architecture, enabling the integration and joint operation of diverse systems.