Each approach has benefits and drawbacks. The centralized approach requires expensive computeand is more sens to the effects of technical problems. lf one of the few servers becomes inoperable, a large portion of the site's capability is lost. Thus, Wed sites with centralized architectures must have adequate backup plans. Any server problem, no matter how small, can threaten the operation of the site. The decentralized architecture spreads that risk over a large number of servers. If one server becomes inoperable, the site can continue to operate without much degradation in capability.