Answer:
System, Computer, Service
Step-by-step explanation:
Amazon has applied a simple system customer relationship management strategy based on the use of computer and service, which ensures that the customers can use their website easily, they receive value for money, giving them reasons to return and finally giving them highest quality of services. This in return also provides good feedback about the company and the chances of getting new customers to try out the company's services resulting in more demand and profitability for the company.