Transition from SAP CRM

Hi Experts,

My client is planning to move from the current CRM system which our SAP CRM to Salesforce CRM system. I wan to know what are the steps involved in the above process like :

Cleanup Process

Ramp Down period

Transition involved

Impact on commercial terms

notification timelines

and how can this be achieved and what would the steps involved in it...

Please help me out with your expertise.

Thanks,

Nithesh.