What is a good maximum number of list groups when curating for a customer?

A maximum of 20 list groups is considered a good guideline when curating for a customer because it strikes a balance between variety and manageability. Having too few groups may limit the breadth of options available to customers, potentially causing them to miss out on relevant content that meets their needs. On the other hand, exceeding this number can lead to overwhelming the customer, making it difficult for them to navigate and make effective choices.

Research in user experience and information architecture suggests that cognitive load increases as the number of options grows, which can adversely affect decision-making. By keeping list groups to a maximum of 20, you can ensure a more user-friendly selection process while still providing enough diversity in content to meet the customer's interests and requirements. This approach helps maintain engagement and facilitates a more effective curation strategy.