You first need to create an Aiven account and an Aiven account authentication method. Account is a top level concept that can be associated with multiple different projects and with which you can make corporate level configuration like the authentication setup. You can do this in Aiven Console.
Creating the Aiven account
Once you have logged into the Aiven Console, you should see your projects in the top left of your screen. Click the current project to open the project select and click
See all projects. This should open a Projects & Accounts modal.
On the Projects & Accounts modal, click on
Create account and you will be taken to a page where you provide a name, project(s) to link it to and the option to invite other admins.
Once created, you will see an overview of the account just created. A tab, called Authentication, will let you add a new method (in this case: SAML) and configure them.
Add Authentication Method creates a dialog where you can name your method, specify the type and a default team you would want members to join.
Once you click
Add , you will see the configuration URLs for your Identity Provider (do not worry about making a note of these, you can access them at any time).
For now, we are done with the Aiven side of this, let's move on to Azure and create our application.
Creating the Azure Application
When logged in Azure, go to "Enterprise applications" (either by using the using the tiles or the search bar), the use the left column navigation to go to "All applications" and click "New application".
Then use the "Add from the gallery" search bar to search and use the "Azure AD SAML Toolkit". You can use anything you like for the App name, such as "Aiven SAML" and click the "Add" button.
Use the navigation to go back the Enterprise applications list. The application might not be visible yet, and it's possible you have to select the "All applications" filter and apply it to be able to see it in the list. Once it's visible in the list, click it to go to its configuration.
Go to the "Single sign-on" configuration using the left column and select "SAML" when ask to select a single sign-on method.
You'll need to edit the "Basic SAML Configuration" settings with the following data:
Identifier (Entity ID): replace the already configured value with
Reply URL (Assertion Consumer Service URL): replace the already configured value with
Sign on URL: set it to
Then click "Save" on top of the edition zone.
Next, edit the "User Attributes & Claims" section, click "Add a new claim" and create an attribute like so:
Finally, download the "Certficate (Base64)" from the "SAML Signing Certificate" section.
Assigning users to the Azure application
For your users to be able to login using SAML, you need to assign to the Azure application you just created. To do that, use the left column navigation to go to "Users and groups" and click "Add user" on top of the list. You can then select the users that will be able to log in to Aiven with your Azure AD and click on the "Assign" button at the bottom of the page when you're done.
Setting up the Azure Application in Aiven
Once the application is set up, you need to provide the application data to Aiven. These data can be found in the "Single sign-on" settings of the application on Azure. The data we're interrested in is in the "Set up Aiven SAML" section.
You can go back to Aiven Console and edit the Authentication method configuration.
When this is done you can go to Link Account url (shown in Aiven Console) to finalize linking your Azure account and Aiven profile. You can also invite other members of your team to login or signup to Aiven using Azure via the Signup link shown in the Authentication method page. Note: Remember that they will need to be assigned to the Aiven application in Azure for it to be possible.