Agile AWS CloudFormation for Cost-Effective and Reliable Environments
Question
You have a complex system that involves networking, IAM policies, and multiple, three-tier applications.
You are still receiving requirements for the new system.
So you don't yet know how many AWS components will be present in the final design.
You want to start using AWS CloudFormation to define these AWS resources so that you can automate and version-control your infrastructure.
How would you use AWS CloudFormation to provide agile new environments for your customers in a cost-effective reliable manner?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Answer - B.
As your infrastructure grows, common patterns can emerge in which you declare the same components in each of your templates.
You can separate these common components and create dedicated templates for them.
That way, you can mix and match different templates but use nested stacks to create a single, unified stack.
Nested stacks are stacks that create other stacks.
To create nested stacks, use the AWS::CloudFormation::Stackresource in your template to reference other templates.
For more information on Cloudformation best practices, please refer to the below link:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/best-practices.htmlOption B is the correct answer for this scenario.
The approach of creating multiple separate templates for each logical part of the system and using nested stacks in AWS CloudFormation provides the required flexibility and agility to manage the resources in an efficient manner. This approach allows you to define and deploy individual resources independently, which reduces the likelihood of errors and makes it easier to test and validate changes.
Creating separate templates for each logical part of the system provides the necessary granularity to manage the resources effectively. Each template can define a specific set of resources related to a particular part of the system, and these templates can be version-controlled individually. This approach enables you to deploy new resources, update existing ones, or delete unused resources with minimal impact on the overall system.
Using nested stacks in AWS CloudFormation provides an efficient way to manage and deploy the templates. A nested stack is a stack that is created as a resource within another stack. This approach allows you to reference resources in one stack from another stack, making it easier to manage dependencies and orchestrate the deployment of the templates.
To achieve cost-effectiveness, you can use AWS CloudFormation to automate the creation and deletion of resources based on the application's requirements. With AWS CloudFormation, you can specify the resources needed for a particular environment, and AWS will automatically create and configure the resources as needed. When the environment is no longer required, you can delete the resources, and AWS will stop charging you for them.
In conclusion, using multiple separate templates for each logical part of the system and using nested stacks in AWS CloudFormation provides the required flexibility, agility, and cost-effectiveness to manage AWS resources efficiently. This approach also allows for version control of individual templates, which enables you to maintain control over your infrastructure and support your development process.
