A company is trying to resolve the following issues related to its web servers and Internet presence: - The company's security rating declined on multiple occasions when it failed to renew a TLS…

A DMZ places public-facing web servers behind a controlled perimeter segment, reducing the number of discrete backend hosts the WAF must route to and thereby lowering per-host WAF licensing costs. It also provides a clear boundary for network security policy enforcement across all hosted applications.

A reverse proxy consolidates backend origins behind fewer public IPs and can reduce WAF backend counts, but it does not address the certificate renewal failure issue and introduces an additional infrastructure dependency without fixing the root cause of any of the three stated problems.

An automated CA service API solves the certificate renewal problem through programmatic renewal workflows, but it does not provide additional IP address space or reduce the number of WAF-billed backend hosts.

BGP configuration controls inter-AS routing and traffic engineering between autonomous systems, but it does not allocate additional public IP addresses or reduce the number of backend hosts exposed to the WAF.

IPv6 provides a 128-bit address space that is effectively inexhaustible, directly solving the company's problem of running out of ISP-assigned public IPv4 addresses without requiring carrier-grade NAT or complex address leasing renegotiations.

Self-signed certificates remove dependency on external CA renewal but disable chain-of-trust verification, causing browser security warnings and violating compliance requirements that mandate publicly trusted certificates for customer-facing services.