docs: add aws integration

docs/integrations/services/aws/index.md

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+# Amazon Web Services Integration
+
+## 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:
+
+-   `passbook.company` is the FQDN of the passbook Install
+
+Create an application in passbook 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: `passbook`
+
+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.
+
+AWS requires two custom PropertyMappings; `Role` and `RoleSessionName`. Create them as following:
+
+![](./property-mapping-role.png)
+
+![](./property-mapping-role-session-name.png)
+
+Afterwards export the Metadata from passbook, and create an Identity Provider [here](https://console.aws.amazon.com/iam/home#/providers).