Within a Visual Studio SharePoint solution, we can map project folders to folders on the SharePoint server filesystem. For static content resources, such as images and style sheets, it is ideal to store them on the filesystem of the SharePoint server rather than in the content database of the SharePoint web applications. This allows Internet Information Services (IIS) to serve up content directly from the filesystem rather than having to request the file from the SQL database before serving it to the client.
There are a number of folders that we can map to, however, the most commonly mapped folders are the
Images folders. Files in our project ...