Employing a combination of load balancing and clustering is an effective high availability strategy, as load balancing spreads the demand across multiple servers, preventing any single server from becoming a bottleneck, while clustering allows for the seamless failover in the event one server fails, thus maintaining continuity of operations. A jump server primarily facilitates secure administration through a single entry point rather that providing high availability. Geographic dispersion adds resilience by distributing infrastructure across different locations, but by itself doesn't ensure the continuous operation of the website. A hot site is a duplicate of the primary site that can be quickly activated in case of a failure, but relying on it alone does not distribute the load or provide immediate failover capabilities.