Perché ho ricevuto l'errore IAM "AWS was not able to validate the provided access credentials" in alcune regioni AWS?

Come posso collegare diverse filiali utilizzando AWS Site-to-Site VPN e AWS Direct Connect?

In che modo posso risolvere l'errore "Waiting for the slave SQL thread to free enough relay log space" in Amazon Aurora MySQL?

Come posso risolvere l'errore "CloudFront wasn't able to connect to the origin"?

When trying to connect the **AWSIotMqttManager** using **accessToken**, **accessKey** and **sessionToken** for authentication. Getting this issue 
```
"IOT Reconnecting + MqttException (0) - java.io.IOException: WebSocket Response header: Incorrect upgrade" 
```

Can you please provide us a documentation  for Android, iOS and Web for IoT authentication using awsAccessKey and awsSecreteKey.
 Android SDK: https://github.com/aws-amplify/aws-sdk-android

Not able to connect to AWSIotMqttManager

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