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AWS CSA Professional Examination notes-High Availability and Business Continuity

Let's start with snippet from "AWS Certified Solutions Architect Professional Exam Blueprint" for knowledge to be evaluated for Domain 1.0: High Availability and Business Continuity 1.1 Demonstrate ability to architect the appropriate level of availability based on stakeholder requirements 1.2 Demonstrate ability to implement DR for systems based on RPO and RTO 1.3 Determine appropriate use of multi-Availability Zones vs. multi-Region architectures 1.4 Demonstrate ability to implement self-healing capabilities
This subject area is carried 15% coverage for your AWS Certified Solution Architect - Professional certification. This is mandated to have a better understanding of the subject and use cases around this. And best way to learn is to go through white papers, YouTube videos, AWS Masterclass and deep dive sessions. Although always prefer to go through AWS provided documentation, preparing a note to just summarize this vast subject area and have a handy last-minute reference…
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AWS Identity and access management (IAM)

What is the Amazon Identity and access management tool (AWS IAM)A centralized service which is used to control user access and AWS resource use. Provides shared access to AWS account. Each user will have own user id and Password for authentication and access to AWS what has been permitted to use by each individualProvides Granular permission to each individual access to AWS resources. This enforces the security and access governance by limiting the each individual access to AWS, according to job responsibility Provides security for AWS resources that are used by application which is running on EC2 instances Supports multi-factor authentication (MFA) to root user extra access security called two-factor authentication. User need to provide user id, password and a code from special device which is mapped to that root account Support Identity Federation, this means, users can access AWS account with their own corporate credential or internet identity providers. this provide temporary acce…
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Amazon API Gateway - Notes for CSAA examination

What is Amazon API Gateways? A managed AWS service to develop, deploy and manage secure APIs at any scaleProvides consistent RESTful APIs for mobile and web applications to access AWS services, Amazon S3 or Amazon Lambda, Amazon DynamoDB or any other AWS servicesIt provided a well-integrated platform to a developer to develop the web or Mobile application which is APIs based for backend in AWS cloud. This supports both development community, APIs based web or Mobile application developer or APIs' developerProvide Seamless front door capability to manage all APIs calls to resource which is inside AWS or Out side AWSForms app-facing part in serverless architecture framework
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Amazon Elastic Compute Cloud (EC2)

What is Elastic Compute Cloud (EC2)?This is a virtual machine running on shared hardware in multi-tenancy fashion with a feature of the quick boot (in minutes), auto scaling in quick time tens, hundred even in thousands of instances.
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Amazon Simple Storage Service: Object Tagging

Object tagging enables to categorize object storage. A tag is a key-value pair.  Although object name prefix also enables to categorize the object storage, this is one-dimension categorization. Object tagging enables to categorize the object into multiple dimensions.

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Amazon Simple Storage Service: Object Versioning

We all aware about document versioning importance and might be aware of source code versioning concept. Amazon S3 also supports versioning for objects which uploaded to S3 bucket.  Versioning enables to keep multiple version of same documents and also protect from unintended overwrites and deletions or to archive objects. Objects/files can be retrieved from previous versions.

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Amazon Simple Storage Service: Bucket Configuration Options

To configure a bucket for website hosting, add configuration to manage objects lifecycle in the bucket, and configure the bucket to log all access to the bucket, Amazon S3 supports sub-resources. Subresources help to store and manage the bucket information. Subresources can be created by using of AWS SDK, AWS API or Console.
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