1. A domain management method for a virtualized computing environment, the method comprising: collating advice received from one or more domain advisors connected in the virtualized computing environment; resolving any conflicts among the advice received from said one or more domain advisors; utilizing the collated advice to generate a placement plan comprising a plurality of operations for virtual machines in said virtualized computing environment; and executing the one or more operations in the placement plan, wherein one or more domain handlers may be called to update the virtualized computing environment before, during or after execution of one or more operations from among said plurality of operations in the plan.