{"id":7052,"date":"2022-11-25T08:28:19","date_gmt":"2022-11-25T08:28:19","guid":{"rendered":"https:\/\/demo.slitigenz.io\/what-is-infrastructure-as-code-iac-how-does-infrastructure-as-code-on-aws-work\/"},"modified":"2024-05-16T05:53:22","modified_gmt":"2024-05-16T05:53:22","slug":"what-is-infrastructure-as-code-iac-how-does-infrastructure-as-code-on-aws-work","status":"publish","type":"post","link":"https:\/\/old.slitigenz.io\/vi\/what-is-infrastructure-as-code-iac-how-does-infrastructure-as-code-on-aws-work\/","title":{"rendered":"What is Infrastructure as Code (IaC)? How Does Infrastructure as Code on AWS work?\u00a0"},"content":{"rendered":"
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Overview<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Infrastructure as Code (IaC) is the managing and provisioning of infrastructure through code instead of through manual processes.<\/p>

With IaC, configuration files are created that contain your infrastructure specifications, which makes it easier to edit and distribute configurations. It also ensures that you provision the same environment every time. By codifying and documenting your configuration specifications, IaC aids\u00a0configuration management<\/a>\u00a0and helps you to avoid undocumented, ad-hoc configuration changes.<\/p>

Version control is an important part of IaC, and your configuration files should be under source control just like any other software source code file. Deploying your infrastructure as code also means that you can divide your\u00a0infrastructure<\/a>\u00a0into modular components that can then be combined in different ways through automation.<\/p>

Automating\u00a0infrastructure provisioning<\/a> with IaC means that developers don\u2019t need to manually provision and manage servers, operating systems, storage, and other infrastructure components each time they develop or deploy an application. Codifying your infrastructure gives you a template to follow for provisioning, and although this can still be accomplished manually, an automation tool.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Declarative vs. imperative approaches to IaC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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There are 2 ways to approach IaC: declarative or imperative.\u00a0<\/p>

A declarative approach defines the desired state of the system, including what resources you need and any properties they should have, and an IaC tool will configure it for you.\u00a0<\/p>

A declarative approach also keeps a list of the current state of your system objects, which makes taking down the infrastructure simpler to manage.<\/p>

An imperative approach instead defines the specific commands needed to achieve the desired configuration, and those commands then need to be executed in the correct order.\u00a0<\/p>

Many IaC tools use a declarative approach and will automatically provision the desired infrastructure. If you make changes to the desired state, a declarative IaC tool will apply those changes for you. An imperative tool will require you to figure out how those changes should be applied.<\/p>

IaC tools are often able to operate in both approaches, but tend to prefer one\u00a0approach over the other.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Benefits of IaC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Provisioning infrastructure has historically been a time consuming and costly manual process. Now infrastructure management has moved away from physical hardware in data centers, though this still may be a component for your organization, to\u00a0virtualization<\/a>,\u00a0containers<\/a>, and\u00a0cloud computing<\/a>.\u00a0<\/p>

With cloud computing, the number of infrastructure components has grown, more applications are being released to production on a daily basis, and infrastructure needs to be able to be spun up, scaled, and taken down frequently. Without an IaC practice in place, it becomes increasingly difficult to manage the scale of today\u2019s infrastructure.<\/p>

IaC can help your organization manage IT infrastructure needs while also improving consistency and reducing errors and manual configuration.<\/p>

Benefits:<\/h4>