In previous projects we have worked with Jasper Reports Server Community Edition. From our experience, we have revealed that, it is a standalone report server i.e. a reporting container bundled in a Web Server. We can design the reports using IReport Designer and can deploy those reports in JasperReports Server.
We can have out-of-the box functinalities like PDF, DOC exporting option in Jasper-Report Server while displaying the reports without any coding.
We can run scheduled report generation from Jasper Reports Server by enabling schedule on it.
Also we can authorise users to view the reports and make the logical groups of reports.
In below Picture we are showing the architectural integration of Jasper Reports Server in standard Enterprise Application stack.
Also we are in process of exploration of the functionalities in Jasper Reports Server. We will update this post with our latest knowledge on it.