> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-admin/9.3-administer/embed-and-extend-pentaho-functionality-cp/embed-and-extend-pdi-functionality/embed-pentaho-data-integration/expose-a-transformation-or-job-as-a-web-service.md).

# Expose a transformation or job as a web service

You can run a PDI transformation or job as part of a web-service by developing one of the following implementations:

* Write a servlet that maps incoming parameters for a [transformation step](https://github.com/pentaho/documentation/blob/main/PDIA/9.3/Administer/Embed%20and%20extend%20Pentaho%20functionality/Embed%20and%20extend%20Pentaho%20functionality%20\(cp\)/Embed%20and%20extend%20PDI%20functionality/Embed%20Pentaho%20Data%20Integration/Sample%20Class%20Scenarios%20-%20Embed%20PDI/Run%20transformations=GUID-0D76C880-CB9F-4955-83E1-49C37BDF20E7=1=en=.md) or [job entry](broken://pages/Fl2dUQqnGCFNTP4e1eKO) and executes them as part of the request cycle.
* Use the Carte server or the Pentaho Server directly by building a transformation that writes its output to the HTTP response of the Carte server. Then, specify the **Pass Output to Servlet** option in the Text Output, XML Output, JSON Output, or scripting steps to write output to the HTTP response. For an example, run the `pentaho/design-tools/data-integration/samples/transformations/Servlet Data Example.ktr` sample transformation on Carte.


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