The AWS service Abbreviations are a set of idioms and languages used by AWS services, such as AWS Lambda and EC2. Each service has its own set of abbreviations. AWS service Abbreviations are a collaborative effort between the AWS service teams to document and communicate service usage and to improve consistency across services.

IAM Identity and Access Management
ELB Elastic Load Balancer
S3 Simple Storage Service
ALB Application Load Balancer
SWF Simple Workflow Service
NLB Network Load Balancer
SNS Simple Notification Service
EC2 Elastic Cloud Compute
SQS Simple Queue Service
ECS Elastic Container Service
SES Simple Email Service
ECR Elastic Container Repository
SSM Simple Systems Manager
EBS Elastic Block Storage
RDS Relational Database Service
EFS Elastic File Storage
EMR Elastic MapReduce
VPC Virtual Private Cloud
EB Elastic Beanstalk
VPN Virtual Private Network