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1. Host a simple, public-facing website

   1. Can create security group rules which allow the webserver to respond to inbound HTTP and SSL requests from the Internet while simultaneously prohibiting the webserver from initiating outbound connections to the Internet.

   2. Can select "VPC with a Single Public Subnet Only".

Amazon VPC 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 environment, including selection of your own IP address range, creation of subnets, and configuration of route tables and network gateways. You can use both IPv4 and IPv6 in your VPC.

Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale.

Understanding the Amazon SWF application logical elements will help you determine how to build your own flow applications.

Amazon Simple Workflow Service (SWF) helps developers build, run, and scale background jobs that have parallel or sequential steps. You can think of Amazon SWF as a fully-managed state tracker and task coordinator in the Cloud.

SNS operations can be classified as owner operations, subscriber operations and publisher operations.

Owner operations

1. CreateTopic

   1. Create a new topic.

2. DeleteTopic

With Worldwide SMS feature, you can use SNS to deliver SMS (text) messages to 200+ countries, and you do not require recipients to explicitly opt in like in other cases.

You must obtain prior permission from recipients to send SMS messages to their phone numbers, where required by local law and regulations.

Will discuss about some of the features of SNS.Notes on Security is important for the exams.

SNS Security Features

1. All API calls made to SNS are validated for the user’s AWS Id and the signature.

2. Topics can only be created by users with valid AWS IDs who have signed up for SNS.