1) The document proposes an agent-based economic model for analyzing interactions between consumers and clouds (consumer-to-cloud) and between clouds (cloud-to-cloud) in an intelligent intercloud system. 2) For consumer-to-cloud interactions, a novel negotiation protocol and strategy called adaptive concession rate (ACR) and minimally sufficient concession (MSC) is developed. 3) For cloud-to-cloud interactions, a four-stage interaction protocol and strategies for cloud agents that result in coalition formation and fair division of payoffs are developed.