A load balancer is the correct technology to implement a solution that makes routing decisions based on HTTP header, uniform resource identifier (URI), and SSL session ID attributes. Load balancers can inspect incoming traffic and make routing decisions to distribute the traffic across multiple servers based on various attributes, including the ones mentioned, to ensure optimal resource use and efficient traffic management12.
References :=
* Cisco Unified Border Element Configuration Guide1.
* URI based outbound Dial-peer configuration on CUBE - Cisco Community

Protected data refers to any information that is legally guarded or sensitive due to its nature. In the context of the organization described, the main database contains Intellectual Property (IP), which includes patents that are legally protected forms of inventions and designs. The secondary database holds Personally Identifiable Information (PII), which comprises data that can be used to identify individuals, such as names and contact details. Both IP and PII are considered protected data and should be identified during an internal audit to ensure they are handled according to legal and regulatory standards. References: Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

Network Address Translation (NAT) is the technology that allows a single IP address to send and receive traffic for multiple devices by modifying the IP header. NAT remaps one IP address space into another, enabling multiple devices to use a single public IP address to send and receive packets through the Internet2.
References := The concept of NAT and its role in network traffic management is detailed in networking resources and documentation, including those provided by network solution providers2.