# Developer Installation ### Getting Started Guide This guide helps you to install [User\&Org Service](https://github.com/sunbird-lern/sunbird-lms-service) on developer machine. It includes instructions for installing the Cassandra, Elasticsearch, Keycloak server in standalone mode, along with [admin-util ](https://github.com/sunbird-lern/sunbird-apimanager-util)service for managing users and organisations. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://lern.sunbird.org/use/developer-guide/user-and-org-service/developer-installation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.