What are the deployment strategies in AWS?

Certainly, MahendraKumar. I'd be happy to provide you with information about deployment strategies in AWS. Here are some key deployment strategies and options available:

1. AWS Elastic Beanstalk: This is a user-friendly service for deploying and scaling web applications. It supports various programming languages and server configurations, making it an excellent starting point for beginners.

2. AWS CloudFormation and AWS CDK: These tools allow you to define your infrastructure as code. CloudFormation uses JSON or YAML templates, while CDK lets you use familiar programming languages to define your infrastructure.

3. Blue/Green Deployment: This strategy involves creating two separate but identical environments. One environment (blue) runs the current application version, while the other (green) is updated with the new version. Traffic is then switched from blue to green once testing is complete.

4. Canary Deployment: In this approach, you gradually roll out the change to a small subset of users before rolling it out to the entire infrastructure and making it available to everybody.

5. Rolling Deployment: This strategy gradually replaces instances of the previous version of an application with new instances.

6. In-Place Deployment: This involves updating the existing infrastructure with new code or configurations.

7. Immutable Deployment: In this strategy, you create a new set of instances with the updated application version, then switch traffic to these new instances and terminate the old ones.

8. AWS CodeDeploy: This is a fully managed deployment service that automates software deployments to various compute services such as Amazon EC2, AWS Lambda, and on-premises servers.

9. AWS AppConfig: This service allows you to create, manage, and quickly deploy application configurations.

When designing a deployment strategy, consider factors such as the nature of your application, required downtime, rollback capabilities, and the level of risk you're willing to accept. It's also important to integrate monitoring and logging into your deployment process to track the health and performance of your application during and after deployment.

Remember to always follow security best practices, such as using least privilege access principles, encrypting data in transit and at rest, and regularly updating and patching your systems.

Sources
Guidance on Secure and Cost-Optimized Deployment of a New Web Application | AWS re:Post
Introduction - Overview of Deployment Options on AWS
Create a deployment strategy - AWS AppConfig