How Suitelet Scripts are Executed

The following steps and diagram provide an overview of the Suitelet execution process:

Client initiates an HTTP GET or POST request (typically from a browser) for a system-generated URL. A web request object contains the data from the client's request. See N/http Module.
The user's script is invoked, which gives the user access to the entire Server SuiteScript API as well as a web request and web response object.
NetSuite processes the user's script and returns a web response object to the client. The response can be in following forms:
- Free-form text
- HTML
- RSS
- XML
- A browser redirect to another page on the Internet
  
  Important:
  You can only redirect to external URLs from Suitelets that are accessed externally (in other words, the Suitelet has been designated as “Available Without Login” and is accessed from its external URL).
- A browser redirect to an internal NetSuite page. The NetSuite page can be either a standard page or custom page that has been dynamically generated using UI objects.
The data renders in the user's browser.