[Link](https://pluralsight.com/resources/blog/cloud/your-aws-terminology-cheat-sheet) Use this cheat sheet as a simple, quick resource as you review and study for AWS certifications and work through our courses. We don't just want you to memorize definitions — we want you to understand and recognize these terms and concepts, so we've taken the definitions AWS has provided and simplified them. Happy training! 1. **Access control list (ACL):** A firewall/security layer on the subnet level 2. **Auto scaling:** Automates the process of adding or removing EC2 instances based on traffic demand for your application 3. **Buckets:** Root-level "folders" 4. **CloudFront:** Content delivery network (CDN) that allows you to store your content at "edge locations" located all around the world, allowing customers to access your content more quickly 5. **CloudTrail:** Allows you to monitor all actions taken by IAM users 6. **CloudWatch:** Service that allows you to monitor various elements of your AWS account 7. **Consolidated billing:** Allows you to view, manage, and pay bills for multiple AWS accounts in one user interface 8. **DNS server:** A database of website domains and their corresponding IP addresses 9. **DynamoDB:** NoSQL database service that does not provide other NoSQL software options 10. **Elastic Block Store (EBS):** Provides persistent block storage volumes for use of EC2 instances. 11. **Elastic Compute Cloud (EC2):** A virtual computer, very similar to a desktop/laptop computer 12. **Elastic Load Balancing (ELB)**: Evenly distributes traffic between EC2 instances that are associated with it 13. **ElastiCache**: Data caching service used to help improve the speed/performance of web applications running on AWS 14. **Elasticity**: The ability of a system to increase and decrease in size 15. **Fault tolerance**: Property that enables a system to continue operating properly in the event of the failure of one or more components 16. **Firewall**: A type of software that either allows or blocks certain kinds of internet traffic to pass through it 17. **Folder**: Any "subfolder" created in a bucket 18. **High availability**: Refers to systems that are durable and likely to operate continuously without failure for a long time 19. **IAM users**: Individuals who have been granted access to an AWS account 20. **Identity and Access Management (IAM)**: Service where AWS user accounts and their access to various AWS services are managed 21. **Lambda**: Serverless computing that will replace EC2 instances, for the most part 22. **Object availability**: Percent over a one-year time period that a file stored in S3 will be accessible 23. **Object durability**: Percent over a one-year time period that a file stored in S3 will not be lost 24. **Object lifecycle**: Set rules to automatically transfer objects between storage classes at defined time intervals 25. **Object sharing**: Ability to make any object publicly available via a URL link 26. **Object versioning**: Automatically keep multiple versions of an object (when enabled) 27. **Organizations**: Allow you or your company access to manage billing and access to multiple AWS accounts in one user interface 28. **Principle of least privilege**: Giving a user only the rights/access to the AWS services and resources they need to do their job and nothing more 29. **Publishers:** Human/alarm/event that gives SNS the message that needs to be sent 30. **Relational Database Service (RDS)**: SQL database service that provides a wide range of SQL database options to select from 31. **RedShift**: Data warehouse database service designed to handle petabytes of data for analysis 32. **Roles**: How different AWS services are granted permission to communicate and share data 33. **Route 53**: Where you configure and manage web domains for websites or applications you host on AWS 34. **Scalability**: The ability of a system to easily increase in size and capacity in a cost-effective way 35. **Security group (SG)**: Firewall/security layer on the server/instance level 36. **Shared responsibility model**: Defines what you and AWS are responsible for when it comes to security and compliance 37. **Simple Notification Service (SNS)**: AWS service that allows you to automate the sending of email or text messaging notifications based on events that happen in your AWS account 38. **Simple Storage Service (S3)**: Online bulk storage service you can access from almost any device 39. **Storage class**: Represents "classification" assigned to each object in S3 (standard, RRS, S3-IA, Glacier) 40. **Subnet**: A subsection of a network and generally includes all the computers in a specific location 41. **Subscriptions**: Endpoints to which a topic sends messages 42. **Topics**: How you label and group different endpoints to which you send messages 43. **Trusted Advisor**: Service that "advises" and helps you optimize aspects of your AWS account 44. **User credentials**: IAM user's username and password for logging in to AWS 45. **Virtual Private Cloud (VPC)**: A private subsection of AWS you control and in which you can place AWS resources