Deploying Web Applications Rapidly: Methods for High Availability | DOP-C01 Exam Answer

Methods to Deploy Applications Rapidly

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Question

Your company develops a variety of web applications using many platforms and programming languages with different application dependencies.

Each application must be developed and deployed quickly and be highly available to satisfy your business requirements.

Which of the following methods should you use to deploy these applications rapidly?

Answers

Explanations

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A. B. C. D.

Answer - A.

Elastic Beanstalk supports the deployment of web applications from Docker containers.

With Docker containers, you can define your own runtime environment.

You can choose your own platform, programming language, and application dependencies (such as package managers or tools) that aren't supported by other platforms.

Docker containers are self-contained and include all the configuration information and software your web application requires to run.

Using Docker with Elastic Beanstalk, you have an infrastructure that automatically handles the details of capacity provisioning, load balancing, scaling, and application health monitoring.

For more information on Dockers and Elastic Beanstalk, please refer to the below link:

http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker.html

The best method to deploy multiple web applications quickly and with high availability on AWS depends on the specific requirements of your company's applications. However, out of the options provided, option A is likely the most suitable.

Option A recommends deploying web applications from Docker containers in an Elastic Beanstalk environment with Auto Scaling and Elastic Load Balancing. This approach is a popular and widely used method for deploying web applications quickly and with high availability. Elastic Beanstalk is a fully managed service that can automatically handle capacity provisioning, load balancing, and application deployment based on the developer's preferred language, platform, and configuration.

Auto Scaling allows you to automatically adjust the number of Amazon EC2 instances in your Elastic Beanstalk environment to handle changes in traffic, ensuring that your application can scale up or down as needed. Elastic Load Balancing distributes incoming traffic across multiple EC2 instances, which helps to prevent any one instance from becoming overloaded.

Using Docker containers to deploy your applications provides the benefits of containerization, including simplified deployment and increased flexibility. By packaging your applications and their dependencies into containers, you can quickly and easily deploy your applications across multiple environments.

Option B suggests using the AWS CloudFormation Docker import service to build and deploy applications with high availability in multiple Availability Zones. While CloudFormation can automate infrastructure deployment, using it to manage the deployment of complex applications may require a significant amount of scripting and customization.

Option C recommends developing each application's code in DynamoDB and then using hooks to deploy it to Elastic Beanstalk environments with Auto Scaling and Elastic Load Balancing. This option may not be suitable for all applications since DynamoDB is a NoSQL database and may not provide the required functionality for each application.

Option D suggests storing each application's code in a Git repository, developing custom package repository managers for each application's dependencies, and deploying to AWS OpsWorks in multiple Availability Zones. This option may be more complex and require more setup time and maintenance than the other options.

In summary, deploying web applications from Docker containers in an Elastic Beanstalk environment with Auto Scaling and Elastic Load Balancing (Option A) is likely the most suitable method for deploying multiple web applications quickly and with high availability on AWS.