What is the purpose of a PushTopic in Salesforce?

A PushTopic in Salesforce is designed to facilitate real-time updates by sending notifications when records meet specific criteria. This feature is particularly beneficial in scenarios where applications need to receive immediate changes in data, allowing them to react appropriately without having to constantly poll for new information.

When a record that fulfills the conditions defined in the PushTopic is created, updated, or deleted, Salesforce automatically notifies subscribed listeners. This enables developers to create dynamic applications that respond in real time, improving user experience and data handling efficiency.

In contrast, the other options do not align with the primary purpose of a PushTopic. For example, bulk data inserts pertain to data import processes rather than notifications. Parsing and transforming data primarily relates to data integration processes, which involves adapting data formats rather than sending notifications. Managing user permissions is a different aspect of Salesforce governance and security, not related to real-time data notifications.