The Most Popular AWS Services Today

Amazon Web Services is a cloud service that was introduced by Amazon that provides services in the form of blocks that can be used to create and deploy any type of application in the cloud (AWS).

Benefits of using Amazon Web Services:

1. AWS provides enterprises with access to programming models, databases, and operating systems.
2. It offers a low-cost service in which you just pay for what you use.
3. With a few mouse clicks, applications may be deployed in numerous locations.
4. AWS provides the ability to operate with hybrid capabilities.
5. Data centers may be simply maintained and administered without investing any money.
6. Clouds are freely accessible and have endless capacity.
7. Amazon Web Services hosts dynamic websites on which web and application servers run.
8. AWS allows you to send a big number of emails.
9. All files will be securely stored and accessible from anywhere.

Watch this AWS Course to learn more about AWS and its benefits

AWS includes a number of domains, some of which are widely used:

1. Compute services include Lambda and Amazon LightSail.
2. Amazon RDS, Amazon Aurora, and Amazon Redshift are among the services available in the database.
3. AWS CloudWatch and Amazon Cloudtrail are examples of management tools.
4. AWS Database Migration Service and AWS Snowball are examples of migration services.

On the Testpreptraining website, you may take the greatest AWS practice exam and free practice test.

 

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How To Unite AWS KMS with Serverless Application Model (SAM)

The Basics

AWS KMS is a Key Management Service that let you create Cryptographic keys that you can use to encrypt and decrypt data and also other keys. You can read more about it here.

Important points about Keys

Please note that the customer master keys(CMK) generated can only be used to encrypt small amount of data like passwords, RSA key. You can use AWS KMS CMKs to generate, encrypt, and decrypt data keys. However, AWS KMS does not store, manage, or track your data keys, or perform cryptographic operations with data keys.

You must use and manage data keys outside of AWS KMS. KMS API uses AWS KMS CMK in the encryption operations and they cannot accept more than 4 KB (4096 bytes) of data. To encrypt application data, use the server-side encryption features of an AWS service, or a client-side encryption library, such as the AWS Encryption SDK or the Amazon S3 encryption client.

Scenario

We want to create signup and login forms for a website.

Passwords should be encrypted and stored in DynamoDB database.

What do we need?

1. KMS key to encrypt and decrypt data
2. DynamoDB table to store password.
3. Lambda functions & APIs to process Login and Sign up forms.
4. Sign up/ Login forms in HTML.

Lets Implement it as Serverless Application Model (SAM)!

Lets first create the Key that we will use to encrypt and decrypt password.

KmsKey:
    Type: AWS::KMS::Key
    Properties: 
      Description: CMK for encrypting and decrypting
      KeyPolicy:
        Version: '2012-10-17'
        Id: key-default-1
        Statement:
        - Sid: Enable IAM User Permissions
          Effect: Allow
          Principal:
            AWS: !Sub arn:aws:iam::${AWS::AccountId}:root
          Action: kms:*
          Resource: '*'
        - Sid: Allow administration of the key
          Effect: Allow
          Principal:
            AWS: !Sub arn:aws:iam::${AWS::AccountId}:user/${KeyAdmin}
          Action:
          - kms:Create*
          - kms:Describe*
          - kms:Enable*
          - kms:List*
          - kms:Put*
          - kms:Update*
          - kms:Revoke*
          - kms:Disable*
          - kms:Get*
          - kms:Delete*
          - kms:ScheduleKeyDeletion
          - kms:CancelKeyDeletion
          Resource: '*'
        - Sid: Allow use of the key
          Effect: Allow
          Principal:
            AWS: !Sub arn:aws:iam::${AWS::AccountId}:user/${KeyUser}
          Action:
          - kms:DescribeKey
          - kms:Encrypt
          - kms:Decrypt
          - kms:ReEncrypt*
          - kms:GenerateDataKey
          - kms:GenerateDataKeyWithoutPlaintext
          Resource: '*'

The important thing in above snippet is the KeyPolicy. KMS requires a Key Administrator and Key User. As a best practice your Key Administrator and Key User should be 2 separate user in your Organisation. We are allowing all permissions to the root users.

So if your key Administrator leaves the organisation, the root user will be able to delete this key. As you can see **KeyAdmin **can manage the key but not use it and KeyUser can only use the key. ${KeyAdmin} and **${KeyUser} **are parameters in the SAM template.

You would be asked to provide values for these parameters during SAM Deploy.

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Top 14 Must-Haves for Your AWS Architecture Checklist

After analyzing the requirements of your application, you came up with an AWS architecture. Good job! This blog post contains a checklist helping you to validate your architecture. Make sure that you haven’t forgotten any important aspects.

I’ve created an AWS diagram using Cloudcraft and will use the following architecture as an example when going through my AWS Architecture Checklist. The architecture shows a typical web application consisting of a layer for synchronous request processing and a layer for asynchronous job processing. My architecture is made up of the following components:

• Route 53 a globally distributed Domain Name System (DNS)
• CloudFront a Content Delivery Network (CDN)
• Simple Storage Service (S3) an object store
• Application Load Balancer (ALB) distributing incoming HTTPS requests among a fleet of EC2 Instances
• EC2 Instance a virtual machine
• Auto Scaling Group manages a fleet of EC2 instances
• Simple Queue Service (SQS) a message queue
• Relational Database Service (RDS) Aurora a PostgreSQL-compatible database
• Elastic File System (EFS) a network file system (NFS)

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