AWS service limitations to keep in mind ⚠️

As cloud architects and developers, knowing the limitations of our tools is crucial for building robust and scalable solutions.

• ECR image size: 10GB
• EBS volume size: 64TB
• RDS storage limit: 64TB
• Kinesis data record: 1MB
• S3 object size limit: 5TB
• VPC CIDR blocks: 5 per VPC
• Glue job timeout: 48 hours
• SNS message size limit: 256KB
• VPC peering limit: 125 per VPC
• ECS task definition size: 512KB
• CloudWatch log event size: 256KB
• Secrets Manager secret size: 64KB
• CloudFront distribution: 25 per account
• ELB target groups: 100 per load balancer
• VPC route table entries: 50 per route table
• Route 53 DNS records: 10,000 per hosted zone
• EC2 instance limit: 20 per region (soft limit)
• Lambda package size: 50MB zipped, 250MB unzipped
• SQS message size: 256KB (standard), 2GB (extended)
• VPC security group rules: 60 in, 60 out per group
• API Gateway payload: 10MB for REST, 6MB for WebSocket
• Subnet IP limit: Based on CIDR block, e.g., /28 = 11 usable IPs
• DynamoDB Item Size: 400KB

Remember, many of these are soft limits that can be increased by contacting AWS support.