1. Lecture 15 – Amazon Network as a Service

2. Recall IaaS Server as a Service Storage as a Service Network as a Service

3. We have created an EC2 instance (Server as a Service) We have attached an EBS volume to the instance (Storage as a Service)

4. If the EC2 instance terminates, we can create another instance, and attache the EBS volume to the new instance (data are persistant) But the IP address of the instance is not persistant! - you have to reconfigure the clients that rount to the server via IP - update your DNS server and wait for it to propagate We can address this inconvience by using Amazon Elastic IP Address (Network as a Service)

5. Amazon’s Network as a Service Security Group Elastic IP Addresses CloudFront

6. Elastic IP Address Different types of IP addresses for EC2 instances - EC2 Private IP address: the private IP address is only routable within the EC2 cloud. - EC2 Public IP address: Internet routable address assigned to each EC2 instance. - EC2 Elastic IP address: Internet routable address allocated to an AWS EC2 account. But you can associate an Elastic IP addres to an EC2 instance. Infromation from http://aws.amazon.com/articles/1346

7. Each AWS account is allowed to have 5 elastic IP addresses (If you requires more than 5, you need to apply for it) If you create an Elastic IP address without associating it with an instance, you will be charged $0.01 per hour.

8. Demo how to use Elastic IP address Once you associate an elastic IP address with an EC2 instance, the original public IP address of the instance will be released.

9. Amazon CloudFront Amazon CloudFront “delivers static and streaming contents using a global network of edge locations”. Infromation from http://aws.amazon.com/cloudfront

10. The map is directly copied from http://www.michaelgaigg.com/blog/2008/11/19/fast-faster-cloudfront-speed-matters/

11. The benefits of Amazon CloudFront - reduce the network latency - take off the load of your server - large number of requests can be processed simutaneously - Increase customer experience - Enable mobile clients - Protection of your content via redundency