1. A computer-implemented method of managing traffic in a networked environment, comprising: under control of one or more computer systems configured with executable instructions, receiving a request to a provisioning component for the networked environment, the networked environment including a plurality of host servers connected by an aggregation fabric including layers of network switches, a path across the aggregation fabric to each host server involving a number of connections across the network switches; determining a number of the host servers to be used in performing subsequent operations associated with a source of the request; determining, for at least a lowest layer of the aggregation fabric, a number of network switches over which to disperse the determined number of host servers, the number of network switches at the lowest layer being at most equal to the determined number of host servers; and assigning at least one of the determined number of host servers connected to each network switch of the lowest layer to process one of the subsequent operations, wherein each of the determined host servers is operable to concurrently perform at least a portion of one of the subsequent operations.