CRM is a vital part of any business. The reason for this is simple: CRM helps a business to keep in touch with its customers. This means that it can alert the business when there are changes in customer behaviour, such as a drop in sales.One important consideration when deciding to implement a CRM is whether or not you already have an existing customer base. For example, you could start by collecting information about your customers manually, such as by sending them surveys or monitoring their online activity. Once you have built up some initial data, you can start using more automated methods such as web analytics and loyalty programs.CRM systems can help businesses:Identify potential customers and determine how to best engage with them. Measure customer satisfaction, loyalty, and propensity to buy. Improve customer retention, profitability, and sales.