Ayyappu MK

You can delete AWS Organization in an account through the CLI command below: aws organizations delete-organization --profile a2 As we have the organization deleted, you would see no organization while navigating to the AWS Organization home page. Create an organization. aws organizations create-organization --profile a2 We're not passing anything like name. That means, you can create at most only one organization in an account. Let's go back to the console. That created an Organization. It contains a Root OU and a member account (current account which is the management account). Each organization has a management account where the features of the organization are configured. In our case, a2 is the management account as we have created the organization in a2 account (current account). Root is the top most OU (Organizational Unit). An OU, which is a logical grouping of accounts or other OUs, can have either another OU or an account as its child. An OU can have more than one chil...

When encountering the phrase "handle peak load traffic" in a question, think of AWS Auto-Scaling.

Use a Type A Record without an Alias for EC2 instances. Use a Type A Record with an Alias for ELB, CloudFront, and S3. Use a CNAME Record with no Alias for RDS.

How to handle peak load of application? - When encountering the phrase "handle peak load traffic" in a question, think of AWS Auto-Scaling. - Use Auto-Scaling with Spot instances  - Use Auto-Scaling with On-Demand instances  What to be used for steady state load of application? - Use Reserved instances What EC2 pricing model should be used for RDS? - Use Reserved instances for RDS Which Route53 record should be used for EC2? - Use a Type A Record without an Alias for EC2 instances Which Route53 record should be used for ELB, CloudFront, S3? - Use a Type A Record with an Alias for ELB, CloudFront, and S3 Which Route53 record should be used for RDS? - Use a CNAME Record with no Alias for RDS Which service should be used to discover and protect sensitive data in AWS using machine-learning and pattern-matching? - Using Amazon Macie Which AWS service should be used to scan Amazon S3 buckets for data security and data privacy? - Using Amazon Macie Where to store encryption keys? - ...

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The ALB spans all subnets in a VPC i.e., it is not inside a subnet but VPC. ALB is bound to Target Groups (TGs). TGs are bound to subnets.

The user requests to get static contents served from CloudFront are directed to the nearby Edge locations .

RDS DB, in one AZ, replicates data synchronously to Standby Replica (created automatically), in another AZ, in Multi-AZ deployment. RDS DB replicates data asynchronously to Read Replicas .

If the objects from the source bucket in the same region are replicated to another bucket in the same region, it is called same region replication (SRR). If the objects are replicated to a bucket in a different region, it is called cross region replication (CRR). 

Use ASG if the EC2 is unable to handle surge of requests. ASG can be integrated with SQS. Based on the length of the queue, the group of EC2 instances can be increased or decreased. 

Application Load Balancer (ALB) Auto Scaling Group (ASG) CloudFront Relational Database Service (RDS) Simple Storage Service (S3) NAT Gateway & NAT Instance