lambda-internals
AWS services accessible by default
- Amazon API Gateway
- Amazon CloudFront
- Amazon CloudWatch
- Amazon Comprehend
- Amazon DynamoDB
- Amazon EventBridge
- Amazon Kinesis
- Amazon Lex
- Amazon Pinpoint
- Amazon Polly
- Amazon Rekognition
- Amazon S3
- Amazon SNS
- Amazon SQS
- AWS Step Functions
- Amazon Textract
- Amazon Transcribe
- Amazon Translate
AWS services requiring VPC configuration
- Amazon ECS
- Amazon EFS
- Amazon ElastiCache
- Amazon OpenSearch Service
- Amazon MSK
- Amazon MQ
- Amazon RDS
- Amazon Redshift
Calling Lambdas from Services
Synchronous invocation
- AWS CLI
- Elastic Load Balancing (Application Load Balancer)
- Amazon Cognito
- Amazon Lex
- Amazon Alexa
- Amazon API Gateway
- Amazon CloudFront via Lambda@Edge
- Amazon Kinesis Data Firehose
- Amazon S3 Batch
Asynchronous invocation
- Amazon S3
- Amazon SNS
- Amazon Simple Email Service
- AWS CloudFormation
- Amazon CloudWatch Logs
- Amazon CloudWatch Events
- AWS CodeCommit
- AWS Config
- AWS IoT
- AWS IoT Events
- AWS CodePipeline
Polling invocation
- Amazon DynamoDB
- Amazon Kinesis
- Amazon Managed Streaming for Apache Kafka (Amazon MSK)
- Amazon SQS
| AWS service | Invocation type | Retry behavior |
|---|---|---|
| Amazon API Gateway | Synchronous | None – returns error to the client |
| Amazon S3 | Asynchronous | Retries with exponential backoff |
| Amazon SNS | Asynchronous | Retries with exponential backoff |
| Amazon DynamoDB Streams | Synchronous from poller | Retries until data expiration (24 hours) |
| Amazon Kinesis | Synchronous from poller | Retries until data expiration (24 hours to 7 days) |
| AWS CLI | Synchronous/Asynchronous | Configured by CLI call |
| AWS SDK | Synchronous/Asynchronous | Application-specific |
| Amazon SQS | Synchronous from poller | Retries until Message Retention Period expires or is sent to a dead-letter queue |