> For the complete documentation index, see [llms.txt](https://docs.aurinko.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurinko.io/authentication/service-accounts.md).

# Service accounts

### **What is a Service account?**

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A service account (or daemon authorization) is a way to access web-hosted resources for server-to-server interactions that must run in the background, without immediate interaction with a user. They are useful for organizations that need to connect multiple accounts with Aurinko without interrupting end users to complete their account authentications.

### **Which providers does Aurinko currently support?**

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Aurinko is currently able to onboard G Suite and MS Exchange service accounts as well as Office 365 "global admin" based app registrations. All Aurinko API's (email, calendar, contacts) support this.

### **Service Account Setup**

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There are 3 main steps to using service accounts for authentication.

1. Your customer's IT Administrator does a one-time configuration of service accounts for their G Suite or Office 365 Organization, or MS Exchange server and shares the credentials with you. For more details please refer to the following articles:

* Setting up G Suite service account
* Setting up Office 365 daemon app registration
* Setting up MS Exchange service account

2. **G Suite or MS Exchange**: Upload the service account credentials to Aurinko from the Account/SERVICE tab:

<div data-full-width="true"><figure><img src="/files/SShNIAYmrsDPBJPt2rwx" alt=""><figcaption></figcaption></figure></div>

3. **Office 365**: specify your daemon app registration details in the Application settings / Office 365 OAuth (Daemon):

<div data-full-width="true"><figure><img src="/files/oxxKK59KYUiVdtMDCw4H" alt=""><figcaption></figcaption></figure></div>

Use the [service/daemon account authentication API ](https://apirefs.aurinko.io/#operation/authorizeDaemon)to add a new service account.

4. Use the [managed accounts API](https://apirefs.aurinko.io/#tag/Managed-accounts) to add user accounts that will use a service account for authentications. Your application can then use the <mark style="color:red;">`managed accounts`</mark> to access user data.