Final answer:
E-business systems are categorized as Buy side systems, Sell side systems, Enterprise resource planning systems, and Customer relationship management systems, each serving specific functions in electronic business operations.
Step-by-step explanation:
The category of e-business system known as Buy side systems, Sell side systems, Enterprise resource planning systems, and Customer relationship management systems are all different types of e-business systems used by companies to conduct business electronically.
Buy side systems manage the purchasing processes of a company, focusing on transactions with suppliers. Sell side systems are concerned with selling products to customers online, while Enterprise resource planning systems are complex software platforms used to integrate all facets of an enterprise's operations, including planning, purchasing, inventory, sales, marketing, finance, human resources, and more.
Lastly, Customer relationship management systems are designed to manage a company's interactions with current and potential customers, focusing on customer service, support, and relationship building.