AWS CloudFormation vs Google Cloud Deployment Manager: What are the differences?
AWS CloudFormation and Google Cloud Deployment Manager are two popular infrastructure-as-code (IaC) tools used for managing cloud resources. Below are the key differences between these two services.
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Cloud Provider Integration: One major difference between AWS CloudFormation and Google Cloud Deployment Manager is the cloud provider integration they offer. AWS CloudFormation is specific to AWS and integrates tightly with the AWS ecosystem, providing seamless resource provisioning and management within the AWS platform. On the other hand, Google Cloud Deployment Manager is designed specifically for Google Cloud Platform (GCP) and provides similar capabilities within the GCP environment.
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Syntax and Configuration Language: AWS CloudFormation uses JSON or YAML templates as its syntax and configuration language. These templates define the desired state of the infrastructure, including resources, dependencies, and configurations. In contrast, Google Cloud Deployment Manager uses YAML or Python configurations to define and provision resources. This difference in syntax and configuration language allows users to choose their preferred format based on their familiarity and comfort.
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Resource Coverage: Another significant difference lies in the extent of resource coverage provided by AWS CloudFormation and Google Cloud Deployment Manager. AWS CloudFormation offers broad coverage for AWS resources, including various EC2 instances, RDS databases, S3 buckets, and more. In contrast, Google Cloud Deployment Manager has a narrower coverage, focusing primarily on GCP resources like VM instances, Cloud Storage buckets, and Cloud SQL databases.
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Template Reusability: AWS CloudFormation provides the concept of nested stacks, allowing users to reuse templates by referencing them within other templates. This enables modularization and reduces duplication of infrastructure code. Google Cloud Deployment Manager lacks a native feature for template reuse, although users can achieve similar functionality by separating resource configurations into reusable YAML or Python files.
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Implementation Approach: AWS CloudFormation takes an imperative approach to infrastructure provisioning, where it largely relies on manual resource creation and configuration statements. In contrast, Google Cloud Deployment Manager follows a declarative approach, where users specify the desired state of the infrastructure, and the tool automatically handles resource creation and configuration. This difference in implementation can influence the overall user experience and preference.
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Maturity and Ecosystem: AWS CloudFormation has been in the market for a longer time and has a mature ecosystem, with extensive community support, a rich library of pre-built templates, and a comprehensive documentation base. Google Cloud Deployment Manager, being a relatively newer service, has a growing ecosystem that is not as extensive as AWS CloudFormation. However, with the popularity of GCP increasing, the ecosystem is continuously expanding.
In summary, CloudFormation is an AWS service that uses declarative YAML or JSON templates for defining and provisioning AWS infrastructure, while Google Cloud Deployment Manager achieves similar goals on Google Cloud Platform using YAML or Python templates.