Which data ingestion method provides a web service to record user actions directly via HTTP?

The method that provides a web service to record user actions directly via HTTP is the Application Programming Interface (API). APIs enable different software applications to communicate with each other over the internet. When it comes to data ingestion for recording user actions, an API can accept HTTP requests containing data about user interactions, which can then be processed and stored by the server.

Using an API allows for real-time data capture, which is particularly valuable for tracking user engagement and behavior in applications. By sending requests to the API endpoint, developers can efficiently log events, such as clicks or purchases, ensuring that this data is promptly available for analysis and reporting.

In contrast, the other methods mentioned have different purposes or operational mechanics. For instance, CSV is a file format used for data storage and exchange, not a method for recording actions in real-time. An SDK, although it includes libraries to interact with APIs, primarily serves as a collection of tools to facilitate development rather than directly managing data ingestion. Web Push Notifications are used for delivering messages to users but are not a method for ingesting user action data in the same context as APIs.