Today, Cloud services are mainly traded using a supermarket approach: Consumer buy predefined services at fixed prices from providers without negotiation. The recent development of the Amazon EC2 spot market - with spot blocks and spot fleet management - shows that dynamic market mechanisms are gaining popularity. Hence, autonomous Bazaar-based negotiations are a promising approach for trading Cloud services on future Cloud markets. Thereby, market participants negotiate the characteristics of Cloud services which are described by SLAs. Specifications such as the WS-Agreement Negotiation standard foster the development of such Bazaar-based Cloud markets. In this paper we present a scientific simulation environment for the simulation of Bazaar-based Cloud markets which is conform to the WSAgreement Negotiation standard. A three-stepped process is required for using the simulation environment: first consumers, intermediaries and providers have to be created, then strategies are assigned to them before the result of the simulation can be analyzed. The aim of the simulation environment is to support market participants in evaluating their negotiation strategies.

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