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AWS CloudFormation vs AWS CodeDeploy: What are the differences?
Developers describe AWS CloudFormation as "Create and manage a collection of related AWS resources". You can use AWS CloudFormation’s sample templates or create your own templates to describe the AWS resources, and any associated dependencies or runtime parameters, required to run your application. You don’t need to figure out the order in which AWS services need to be provisioned or the subtleties of how to make those dependencies work. On the other hand, AWS CodeDeploy is detailed as "Coordinate application deployments to Amazon EC2 instances". AWS CodeDeploy is a service that automates code deployments to Amazon EC2 instances. AWS CodeDeploy makes it easier for you to rapidly release new features, helps you avoid downtime during deployment, and handles the complexity of updating your applications.
AWS CloudFormation and AWS CodeDeploy are primarily classified as "Infrastructure Build" and "Deployment as a Service" tools respectively.
Some of the features offered by AWS CloudFormation are:
- AWS CloudFormation comes with the following ready-to-run sample templates: WordPress (blog),Tracks (project tracking), Gollum (wiki used by GitHub), Drupal (content management), Joomla (content management), Insoshi (social apps), Redmine (project mgmt)
- No Need to Reinvent the Wheel – A template can be used repeatedly to create identical copies of the same stack (or to use as a foundation to start a new stack)
- Transparent and Open – Templates are simple JSON formatted text files that can be placed under your normal source control mechanisms, stored in private or public locations such as Amazon S3 and exchanged via email.
On the other hand, AWS CodeDeploy provides the following key features:
- AWS CodeDeploy fully automates your code deployments, allowing you to deploy reliably and rapidly
- AWS CodeDeploy helps maximize your application availability by performing rolling updates across your Amazon EC2 instances and tracking application health according to configurable rules
- AWS CodeDeploy allows you to easily launch and track the status of your deployments through the AWS Management Console or the AWS CLI
"Automates infrastructure deployments" is the top reason why over 36 developers like AWS CloudFormation, while over 15 developers mention "Automates code deployments" as the leading cause for choosing AWS CodeDeploy.
According to the StackShare community, AWS CloudFormation has a broader approval, being mentioned in 197 company stacks & 77 developers stacks; compared to AWS CodeDeploy, which is listed in 58 company stacks and 15 developer stacks.
Because Pulumi uses real programming languages, you can actually write abstractions for your infrastructure code, which is incredibly empowering. You still 'describe' your desired state, but by having a programming language at your fingers, you can factor out patterns, and package it up for easier consumption.
We use Terraform to manage AWS cloud environment for the project. It is pretty complex, largely static, security-focused, and constantly evolving.
Terraform provides descriptive (declarative) way of defining the target configuration, where it can work out the dependencies between configuration elements and apply differences without re-provisioning the entire cloud stack.Advantages
Terraform is vendor-neutral in a way that it is using a common configuration language (HCL) with plugins (providers) for multiple cloud and service providers.
Terraform keeps track of the previous state of the deployment and applies incremental changes, resulting in faster deployment times.
Terraform allows us to share reusable modules between projects. We have built an impressive library of modules internally, which makes it very easy to assemble a new project from pre-fabricated building blocks.Disadvantages
Software is imperfect, and Terraform is no exception. Occasionally we hit annoying bugs that we have to work around. The interaction with any underlying APIs is encapsulated inside 3rd party Terraform providers, and any bug fixes or new features require a provider release. Some providers have very poor coverage of the underlying APIs.
Terraform is not great for managing highly dynamic parts of cloud environments. That part is better delegated to other tools or scripts.
Terraform state may go out of sync with the target environment or with the source configuration, which often results in painful reconciliation.
I personally am not a huge fan of vendor lock in for multiple reasons:
- I've seen cost saving moves to the cloud end up costing a fortune and trapping companies due to over utilization of cloud specific features.
- I've seen S3 failures nearly take down half the internet.
- I've seen companies get stuck in the cloud because they aren't built cloud agnostic.
I choose to use terraform for my cloud provisioning for these reasons:
- It's cloud agnostic so I can use it no matter where I am.
- It isn't difficult to use and uses a relatively easy to read language.
- It tests infrastructure before running it, and enables me to see and keep changes up to date.
- It runs from the same CLI I do most of my CM work from.
We will use
AWS CloudFormation, as it is ideal for deploying and replicating infrastructure as code.
Amazon CloudWatch Events will be used to send info based on the trigger that initiated the event to developers using
Amazon SNS will also be used in the
AWS CodePipeline after the application has been tested and deployed successfully to the development environment, notifying users to approve the application before it can be deployed to a production environment.
AWS CodeBuild will be used for running tests on the application and
AWS CodeDeploy will be used to deploy the application to Lambda and Alexa Skills Kit.
AWS CodePipeline is a service that will organize the steps taken (building/testing and deployment) when code is pushed to the master branch in our source repository in
Pros of AWS CloudFormation
- Automates infrastructure deployments43
- Declarative infrastructure and deployment21
- No more clicking around13
- Any Operative System you want3
- Infrastructure as code3
- CDK makes it truly infrastructure-as-code1
- Automates Infrastructure Deployment1
Pros of AWS CodeDeploy
- Automates code deployments17
- Backed by Amazon9
- Adds autoscaling lifecycle hooks7
- Git integration5
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Cons of AWS CloudFormation
- No RBAC and policies in templates2
Cons of AWS CodeDeploy
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What is AWS CloudFormation?
What is AWS CodeDeploy?
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