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by KAUSTUBH SHARMA on April 25, 2021, 9:10 p.m. with 5348 views

In this cheat sheet, you learn about how AWS services solve our problems/requirements. This cheat sheet will be helpful for the last-day revision for AWS Certified Developer Associate.

Direct Keywords

Here, Direct keywords mean which keywords directly reflect an AWS Service. These are must-know pairs of keywords & AWS Services. Without learning them, never ever go to the AWS Certification exam.


  • Test permissions using AWS CLI 

aws sts assume-role 

  • ASG to Maintain capacity at a specified target.
Target tracking scaling policy
  • Use libraries in Lambda without needing to include them in your deployment package.
Create Layer in Lambda
  • Increase performance of S3 

Split reads across prefixes 

  • Encryption at rest in DynamoDB 

Amazon DynamoDB Encryption Client 

  • Optimize scan of DynamoDB 

Use parallel scan and limit parameter 

  • To ensure most up-to-date data retrieved from DynamoDB for all queries 

Set  ConsistentRead parameter to true when calling Read operation (such as GetItem, Query, and Scan) 

  • Cache items from DynamoDB 
  • Improve read performance 

Use DynamoDB Accelerator 

  • Group transaction of DynamoDB in all-or-nothing update 


  • Group transaction of DynamoDB without all-or-nothing requirement 


  • Selection of attributes from base table but organized by primary key that is different from base table 

Global Secondary Index 

  • Alarm with period of 10 /30 seconds 
  • Higher charge 

High-resolution Alarm 

  • Alarm with period of any multiple of 60 seconds 

Regular CW Alarm 

  • Search & filter log data coming into CW Logs. 
  • Turn log data into numerical CW Metrics that can be graphed and set an alarm on. 

CW Metric Filter 

  • Audit AWS API calls
AWS CloudTrail
  • defines the deployment actions you want AWS CodeDeploy to execute.

  • AppSpec file for an Amazon ECS or AWS Lambda deployment
  • AppSpec file for an EC2/On-Premises deployment
  • Use IAM Roles to generate temporary credentials for users 
  • Synchronize data across devices without the need to create backend applications

Amazon Cognito 

  • For Authorization(Access Control) 
  • Enable users in your user pool to access AWS resources 

Amazon Cognito Identity Pools 

  • User can access only their own data 

Use Trust policy with IAM condition key to limit access 

  • Create SSL/TLS certificates 

AWS Certificate Manager 




How to Synchronize data across devices without the need to create backend applications?


How to control the placement of tasks of Docker containers on Amazon ECS?


How to improve the Lambda function's performance, considering the Lambda function is downloading a file less than 512MB & it is called multiple times a second?


How to obscured secret values in Lambda console & API output even for users who have permission to use the key?


How to Associate AWS Resources with the event source?


How to invalidate API Cache?


How to initially direct a percentage of traffic to the new version of Lambda code and gradually increase this over time & also be able to roll back if required?


How to modify the Lambda function to ensure data is encrypted before it is uploaded to the S3 bucket.


How to add a manual approval step before the code is deployed into the production environment in release process workflow of the application running on Amazon ECS?.


How to encrypt all traffic between users and CloudFront, and all traffic between CloudFront and the web application?


How to restrict AWS services, resources, and API actions that can be accessed by users in the account which is a member account in AWS Organizations?


How to deploy serverless applications composed of AWS Lambda, Amazon API Gateway, and Amazon DynamoDB using simple syntax?


Developers need a centralized private repository for managing source code. The repository should support updates from multiple sources. Which service he should use?

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