Which Cisco NGFW deployment option provides scalability?

Clustering allows multiple Cisco Next-Generation Firewalls (NGFWs) to operate as a single logical unit, distributing traffic and providing both increased throughput and redundancy. This directly addresses scalability needs by enabling the system to handle more connections and higher bandwidth as demand grows. High availability (HA) provides redundancy but not necessarily increased throughput or capacity beyond what a single device can offer. Inline tap and tap modes are passive monitoring deployments and do not participate in active traffic forwarding or provide scalability for firewall services.