Notes for my Cloud certifications.

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AWS SysOps Administrator Associate


Monitoring is accomplished through the usage of CloudWatch, which is a service to monitor your AWS resources as well as the applications that you run on AWS.

CloudWatch Monitoring:

Configuring custom metrics:

Monitoring EBS:

Monitoring RDS:

Monitoring ELB:

Monitoring Elasticache:

Organizations & Consolidated Billing:

AWS Organizations is an account management service that enables you to consolidate multiple AWS accounts into an organization that you create and centrally manage

Consolidated Billing:

Cost Optimization:

Elasticity and Scalability:

Elasticity is focused around being able to scale your infrastructure up, and down automatically based on traffic, where Scalability is focused on scaling your infrastrucure out more permanentlty. - Elasticity - Allows you to stretch out and retract your infrastructure based on demand - Pay for only what you need - Used during a short time period, such as hours or days - EC2: - Increase instance sizes as required using RIs - DynamoDB - Increase additional IOPS for additional spikes in traffic, then decrease IOPS after the spike - RDS - Not elastic, can’t scale RDS based on demand

RDS Multi Availability Zones & Failover:

Multi AZ Deployment:

Read Replicas:

RDS Multi AZ and Read Replicas:

Connectivity and Troubleshooting:


High Availability Troubleshooting:

Elastic Load Balancers:

Root Access:

ELB Configurations:

Backups and Disaster Recovery:

Disaster Recovery:

DR Strategies:


Services with automated backups:

EC2 & EBS:






Shared Security Model:

IAM Policies:

  "Version": "2012-10-17",
  "Statement": {
    "Effect": "Allow",
    "Action": "s3:ListBucket",
    "Resource": "arn:aws:s3:::example_bucket"

This sample policy would allow a ListBucket Request to be performed on the example_bucket S3 bucket for example.

STS (Security Token Service):



Route53 Routing Policies:

VPCs and Direct Connect:


Lets you provision a logically isolated section of the AWS Cloud where you can launch AWS resources in a virtual network that you define. You have complete control over your virtual networking, IP ranges, creation of subnets and configuration of route tables and network gateways.

Direct Connect (DX):