Empty states in product design, like Slack's, play a crucial role in creating positive user experiences.They prevent confusion, communicate system status, and guide users subtly on how to use the product.Examples of empty states include search bars before use, unopened chats, or new documents.Slack utilizes four types of empty states to enhance onboarding, product adoption, and user engagement.These types include feature defaults, first use states, end states, and error states.Slack's growth from a startup to being acquired by Salesforce for $27.7 billion is briefly mentioned in the article.Slack's use of engaging and personalized empty states like changing search bar copy enhances user interaction.First use empty states in Slack guide users smoothly on setting up channels and provide subtle actions for engagement.Slack's error states are designed with clear messages, helpful troubleshooting suggestions, and an inviting feedback option.Overall, Slack's strategic use of empty states shows the importance of being personable, present, and transparent in UX design.