website: move integrations to separate folder, separate sidebar and new URL, add URL redirect

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

website/integrations/services/aws/index.md

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+---
+title: Amazon Web Services
+---
+
+## What is AWS
+
+:::note
+Amazon Web Services (AWS) is the world’s most comprehensive and broadly adopted cloud platform, offering over 175 fully featured services from data centers globally. Millions of customers—including the fastest-growing startups, largest enterprises, and leading government agencies—are using AWS to lower costs, become more agile, and innovate faster.
+:::
+
+## Preparation
+
+The following placeholders will be used:
+
+- `authentik.company` is the FQDN of the authentik install.
+
+Create an application in authentik and note the slug, as this will be used later. Create a SAML provider with the following parameters:
+
+- ACS URL: `https://signin.aws.amazon.com/saml`
+- Audience: `urn:amazon:webservices`
+- Issuer: `authentik`
+- Binding: `Post`
+
+You can of course use a custom signing certificate, and adjust durations.
+
+## AWS
+
+Create a role with the permissions you desire, and note the ARN.
+
+After you've created the Property Mappings below, add them to the Provider.
+
+Create an application, assign policies, and assign this provider.
+
+Export the metadata from authentik, and create an Identity Provider [here](https://console.aws.amazon.com/iam/home#/providers).
+
+#### Role Mapping
+
+The Role mapping specifies the AWS ARN(s) of the identity provider, and the role the user should assume ([see](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_assertions.html#saml_role-attribute)).
+
+This Mapping needs to have the SAML Name field set to "https://aws.amazon.com/SAML/Attributes/Role"
+
+As expression, you can return a static ARN like so
+
+```python
+return "arn:aws:iam::123412341234:role/saml_role,arn:aws:iam::123412341234:saml-provider/authentik"
+```
+
+Or, if you want to assign AWS Roles based on Group membership, you can add a custom attribute to the Groups, for example "aws_role", and use this snippet below. Groups are sorted by name and later groups overwrite earlier groups' attributes.
+
+```python
+role_name = user.group_attributes().get("aws_role", "")
+return f"arn:aws:iam::123412341234:role/{role_name},arn:aws:iam::123412341234:saml-provider/authentik"
+```
+
+If you want to allow a user to choose from multiple roles, use this snippet
+
+```python
+return [
+    "arn:aws:iam::123412341234:role/role_a,arn:aws:iam::123412341234:saml-provider/authentik",
+    "arn:aws:iam::123412341234:role/role_b,arn:aws:iam::123412341234:saml-provider/authentik",
+    "arn:aws:iam::123412341234:role/role_c,arn:aws:iam::123412341234:saml-provider/authentik",
+]
+```
+
+### RoleSessionName Mapping
+
+The RoleSessionMapping specifies what identifier will be shown at the top of the Management Console ([see](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_assertions.html#saml_role-session-attribute)).
+
+This mapping needs to have the SAML Name field set to "https://aws.amazon.com/SAML/Attributes/RoleSessionName".
+
+To use the user's username, use this snippet
+
+```python
+return user.username
+```