What is AWS?
AWS is a global cloud platform. A hosting provider for one to run their applications on the cloud.
What do they do?
They provide
- Infrastructure as a service (IAAS). No need to manage backup or power supply to the units.
- Platform as a service (PAAS). e.g get Java as a service and one doesn’t need to manage the binaries.
- Software as a service (SAAS). e.g send emails.
- Cloud storage platform
Advantages?
- Stable services.
- Services are billed per hour and for storage per GB.
- Easy to sign in and start scaling.
List of services provided
EC2 (Elastic Compute cloud)
- Bare servers. Run your software on those machines.
- Steps:
- Choose an AMI (Amazon Machine Image) : OS, Software Info, Access Permissions.
- Can create customized AMIs or choose from a predefined one (AMI marketplace).
- Choose Instance type (HW) [Compute optimized, Memory optimized, GPU optimized, storage optimized or general purpose]
- Configure the instance [# of instances, IP, bootstrap scripts etc]
- Add Storage
- Configure security groups (configure access to your instance)
- Launch
- Select a public/private key (needed for access and security)
VPC (Virtual private cloud)
- Create networks in your cloud and run your servers on those networks
S3 (Simple Storage Service)
- File storage and sharing service
RDS (Relational Database Service)
- Run and manage databases (SQL, MySQL, Oracle etc) on the cloud.
Route 53
- Global DNS Service. Its a managed DNS service where one can point their DNS to Amazon and they take care of it.
ELB (Elastic Load Balancer)
- Load balance incoming traffic to multiple machines.
Autoscaling
- Add/Remove capacity on the fly.
- This should ideally be combined with ELB.
