Service Level Agreement or simply SLA is the agreement between cloud service provider and cloud customer. The SLA is signed when the customer busy any product related to cloud. I think you should contact cloud provider to change SLA agreement.

Dear Mohammad,

this is a very interesting research problem. Currently, the providers, frameworks and existing languages only support re-negotiation (during the agreement lifespan they start to negotiate possible changes, and if agreed, the agreement is changed).

I am working in an alternative solution to implement dynamism in the SLAC (service level agreement for clouds) language to support changes on-the-fly. Probably, I will have the new paper ready in a month. If you want to discuss further, please let me know. Here is the presentation of the core of the SLAC (without dynamism).

(if you need the pdf, just let me know)

thank you:

Conference Paper SLAC: A Formal Service-Level-Agreement Language for Cloud Computing

 Thanks Rafael Brundo Uriarte.

The service level agreement is not stable and change always over the time so its not fair or the best solution to cloud user and cloud provider to have static service level agreement instead of that having dynamic service level agreement is more flexible, so I I need here  an idea or a hint of any role that we use when we change the service level agreement dynamically.