EC2

EBS
5 types
- General Purpose (SSD)
Provisioned IOPS (SSD)
Throughput optimised HDD
Cold HDD
Magnetic

AMI's
You can select AMI"s based on the following:
- Region (Regions and Availability Zones)
- OS
- Architecture (32-bit, 64-bit)
- Launch Permissions
- Storage for Root Device
-- Instance Store (Ephemeral Storage)
-- EBS Backed Volume

ENI
- Elastic Network Interface
- essentially a virtual network card
- attached automatically to ec2
- allows primary private iov4 + 1 more
- one elastic IP
- 1 public ipv4 and 1 or more ipv6
- one or more security groups
- a mac address
- a source/destination flag
- a description
- For basic networking. for management networking from production.. separate logging.. low cost.. 

EN
- Enhanced Networking
- Uses single root I/O virtualization to provide high performance networking capabilities on supported instance types
- For when you need speeds between 10 to 100 GBps anywhere you need reliable high throughput

EFA
- Elastic Fabric Adaptor
- Network device attach to EC2 instance to exxelerate HIgh performance compute and machine learning applications
- For when you need to accelerate High performance Computing (HPC and machine learning application or if you need to do any OS bypassing

Compute:
- ec2 instances
- Autoscaling Groups
- Elastic Load Balancers
- Route53 health checks

Storage and Content Delivery
- EBS Volumes
- Storage Gateways
- Cloudfront

Cloudwatch
- Monitoring Performance
- Watches AWS services and services running on aws. Can also be set alarms to trigger notifications
AWS Personal Health Dashboard
- Gives you a personalized view of the performance and availability of the AWS services underlying your AWS resources. 

Trusted Advisor
- helps by recommending changes to your environment based on some AWS best practices

Cloud Trail
- An auditing tool and AWS Systems Manager helps you manage resources
- Equivalent to CCTV
- Logging management console and API calls and actions.

Cloudwatch and Ec2
- CPU
- NetworkDisk
- Status Check (hypervisor, ec2 instance)
-- Will monitor every 5 minutes by default (can tune to have 1 minute intervals in detailed monitoring)