Burp Suite Enterprise Edition comprises the following components:

• Enterprise server – This coordinates between the other components, manages scan scheduling, and performs software updates.
• Agents – These carry out scans using an embedded instance of Burp Scanner. Agents can be distributed across multiple machines, and the pool of agents can grow indefinitely large.
• Web server – This provides the interface to users, via the web UI and REST API. The web server is installed onto the same machine as the Enterprise server.
• Database – This provides persistent storage for configuration data and scan results. There is a bundled database which is suitable for evaluation purposes and many production use cases, or you can use your own external database if required.

The diagram below shows the different components of the software and the connections between them:

Burp Suite Enterprise Edition has extreme scalability. For lightweight use, you can run all of the components on a single machine, including the bundled database. On a machine with substantial resources, this set up should be able to comfortably support up to 10 concurrent scans. The diagram below shows a single-machine deployment:

At the other extreme, you can run agents on a large number of machines, and you can use your own external database for storage. This lets you scale the number of concurrent scans to be indefinitely large, and utilize any existing database infrastructure that you have. The diagram below shows a multiple-machine deployment, with an external database and agent machines: