CRM software is designed to manage customer data and relationships. It's a software type that focuses on the business's external activities. Project management software is dedicated to projects, or large business goals with clear start and end dates, deliverables, and budget restraints.
Online customers have a special set of expectations that set them apart from traditional customers. In particular, they expect lots of information about your company and your products to be available online with minimal searching, close to immediate service, opportunities for self-service via your website, speedy shipment of products, and after-sales support. Therefore, you need to consider CRM principles when doing business online.