About working of aws technical teams to resolve problem

When you create an AWS Support case for your Lambda connectivity issue with S3 and DynamoDB, here's what you can expect:

1. Response time depends on your AWS Support plan level. With a Business Support plan, initial response times are typically within 24 hours for general guidance, 4 hours for system impaired issues, and 1 hour for production system impaired. Enterprise Support offers faster response times. Without a paid support plan, response times for basic technical support may be longer.

2. AWS Support should be able to help with your Lambda connectivity issue. This is a common scenario they handle regularly. Your issue appears to be a Lambda function within a VPC that's having trouble accessing S3 and DynamoDB, which is a known configuration challenge.

3. AWS Support engineers are well-equipped to solve this type of problem. They'll analyze your specific configuration and identify potential issues like:

• VPC endpoint configuration for S3 and DynamoDB
• Security group settings that might be blocking traffic
• IAM permissions for your Lambda function
• Timeout settings that might need adjustment
• Network configuration within your VPC

4. While waiting for AWS Support, you could try these troubleshooting steps:

• Verify your VPC endpoints are correctly configured (gateway endpoint for S3, interface endpoint for DynamoDB)
• Check security groups to ensure they allow outbound traffic to the endpoints
• Review IAM permissions for your Lambda function
• Enable VPC flow logs to monitor network traffic
• Increase Lambda timeout settings
• Test your Lambda function outside the VPC to isolate if the issue is VPC-related

When working with AWS Support, be sure to provide detailed information including relevant logs, error messages, and screenshots to help them analyze your issue more efficiently.
Sources
Following best practices to create and manage your AWS Support cases | AWS re:Post
Accessing s3 from a Lambda within a vpc | AWS re:Post