BA 181 Crm defining and explaining the flow model for a CRM system

defining and explaining the flow model for a CRM system — what is it, how does it work, what are the advantages/challenges?;  Identify three examples of specific businesses (products or services and you might want to consider a specific brand or product line as one of your three business examples, as well) that might be used as a model of CRM for other companies. Explain what they are doing and why you think they could serve as a model example. Illustrate from personal experience, provide examples from customer feedback, or reference articles about the company.