Why Infrastructure As Code (IaC)?

Last Updated on March 11, 2025 by Arnav Sharma

Why IaC?

Infrastructure as code is a way of managing and automating your company’s IT infrastructure using code. Code is written in a specific language that can be read and understood by computers, which helps automate tasks and ensure your infrastructure is always up to date.

In the past, infrastructure has been managed using a combination of manual processes and scripts. This approach is error-prone, time-consuming, and difficult to scale. In order to manage large and complex infrastructures, organizations are turning to infrastructure as code (IaC) tools and practices. IaC allows you to manage your infrastructure using code, which makes it more reliable, scalable, and easier to manage.

Benefits of IaC

When most people think of the benefits of infrastructure as code, they think of the speed and repeatability with which new environments can be created. However, there are other benefits to consider as well.

One key benefit is that infrastructure as code allows for more consistent and reliable deployments. In addition, it makes it easier to identify and troubleshoot issues. This is because the environment is described in a human-readable format, rather than being composed of a series of manual steps that may be difficult to follow.

Another advantage is that infrastructure as code helps to ensure compliance with corporate standards. By codifying the environment, it becomes easier to track changes and ensure that they are made in a controlled manner. This also makes it simpler to roll back changes if necessary.

Lastly, infrastructure as code can help to improve team collaboration.

The cost factor

1. The cost of infrastructure can be a burden for businesses, but with Infrastructure as code, the cost can be reduced.
2. Automating the deployment of infrastructure can help to reduce the time and effort needed to set up and manage new servers or applications.
3. Infrastructure as code also helps to ensure consistency and repeatability across environments, which can help to improve reliability and performance.

Rollback and Disasters

One of the benefits of Infrastructure as Code (IaC) is that you can rollback your changes if something goes wrong. For example, if you make a mistake while editing your infrastructure configuration file, you can easily recover from it by rolling back to the previous version of the file. This can be done using a version control system such as Git, which allows you to track changes to your files and revert to earlier versions if necessary.

Another advantage of IaC is that it makes deployments and rollouts much easier. With IaC, you can automate the deployment process by creating scripts that automatically deploy your infrastructure changes. This helps ensure that your infrastructure is always up-to-date and consistent across all environments.

Finally, IaC also makes it easier to recover from disasters.

What about Security?

The phrase “infrastructure as code” has been around for a few years now, and with good reason. It’s a great way to describe the trend of moving away from traditional, manual methods of configuring and managing infrastructure and toward using code to do so. This shift has many benefits, not the least of which is increased security.

When infrastructure is managed manually, there are more opportunities for errors that can open up vulnerabilities. With code-based management, on the other hand, these errors are less likely to occur because the code is more reliable and predictable. In addition, automated testing can be used to help identify any issues before they cause problems.

Another advantage of using code to manage infrastructure is that it makes it easier to keep everything up-to-date.

The Tools !!

Tools are essential for managing cloud infrastructure. Terraform, and BICEP are two of the most popular tools in this category. Terraform is a tool for writing, managing, and versioning infrastructure as code. It can be used to manage public clouds, private clouds, and hybrid deployments. BICEP is a tool for creating and managing Azure resources. It can be used to create and manage instances, networks, security groups, load balancers, storage volumes, and more.

FAQ: Infrastructure As Code

Q: What is the role of configuration in infrastructure management?

Configuration in infrastructure management involves setting up the environment and infrastructure components to ensure they function as intended. This includes defining system settings, software installation, and network configurations to meet the desired state of the infrastructure.

Q: How does DevOps integrate with infrastructure management?

DevOps integrates with infrastructure management by combining software development and IT operations to automate and streamline the process of provisioning, deploying, and managing infrastructure. This approach enhances collaboration between development and operations teams, leading to more efficient and reliable infrastructure management.

Q: What are the benefits of infrastructure as code (IaC)?

Infrastructure as code (IaC) provides several benefits, including automation of infrastructure provisioning and management, reducing human error, ensuring consistency, and enabling version control for infrastructure changes. IaC helps to achieve immutable infrastructure and allows for easier scaling and replication of environments.

Q: How does provisioning differ from manual configuration?

Provisioning involves the automated setup of infrastructure resources, such as virtual machines, networks, and storage, using tools and code. In contrast, manual configuration requires hands-on setup and adjustments, which can be time-consuming and prone to errors.

Q: How does automation improve infrastructure management?

Automation improves infrastructure management by reducing the need for manual intervention, increasing consistency, and speeding up deployment processes. It ensures that infrastructure components are configured and managed using predefined scripts and policies, which helps to prevent configuration drift and minimize human error.

Q: What is the significance of deployment in infrastructure as code?

Deployment in infrastructure as code involves using code to define, provision, and manage the infrastructure required for applications. This process ensures that infrastructure is consistently deployed across different environments, such as development, testing, and production, enhancing reliability and scalability.

Q: How does Terraform support declarative infrastructure management?

Terraform supports declarative infrastructure management by allowing users to define their desired infrastructure state in code. Terraform then uses this code to provision and manage resources, ensuring that the actual state of the infrastructure matches the desired state specified in the code.

Q: What are some best practices for using infrastructure as code?

Some best practices for using infrastructure as code include maintaining infrastructure code in a version control system, using modular and reusable code, implementing continuous integration and continuous deployment (CI/CD) pipelines, and regularly testing and validating infrastructure code changes.

Q: How does AWS facilitate infrastructure management?

AWS facilitates infrastructure management by providing a range of services and tools, such as AWS CloudFormation, that enable users to define and manage their infrastructure as code. These tools help automate the provisioning and management of AWS resources, ensuring scalability and reliability.

Q: What is the importance of infrastructure automation in modern IT environments?

Infrastructure automation is crucial in modern IT environments as it helps to reduce manual effort, increase consistency, and speed up the deployment and scaling of infrastructure. It allows organizations to respond quickly to changing demands and ensures that infrastructure components are managed efficiently.

Q: How do devops teams use infrastructure as code?

DevOps teams use infrastructure as code to automate the provisioning, configuration, and management of infrastructure. By defining infrastructure in code, they can ensure consistent and repeatable deployments, reduce configuration drift, and improve collaboration between development and operations teams.

Q: What are the advantages of using configuration management tools like Ansible?

Configuration management tools like Ansible offer several advantages, including automation of repetitive tasks, consistency in configuration across environments, and the ability to manage infrastructure at scale. These tools help to reduce human error and ensure that infrastructure components are correctly configured and maintained.

Q: How does infrastructure as code prevent configuration drift?

Infrastructure as code prevents configuration drift by defining the desired state of infrastructure in code. Any changes to the infrastructure are made through code updates, ensuring that the actual state remains consistent with the desired state. This approach helps to maintain uniformity across environments and reduces discrepancies.

Q: What are the benefits of using declarative infrastructure as code?

The benefits of using declarative infrastructure as code include the ability to specify the desired end state of infrastructure, rather than the steps to achieve it. This simplifies the management process, ensures consistency, and makes it easier to maintain and scale infrastructure over time.

Q: How does infrastructure as code ensure security?

Infrastructure as code ensures security by allowing security policies to be defined and enforced through code. This approach, known as policy as code, helps to automate compliance checks, reduce the risk of misconfigurations, and ensure that infrastructure meets security standards consistently.

Q: Why is the use of infrastructure as code essential for complex cloud architectures?

The use of infrastructure as code is essential for complex cloud architectures because it allows for the automation of infrastructure provisioning and management, ensuring consistency and scalability. IaC enables organizations to manage large-scale environments efficiently and reduces the complexity associated with manual configuration.

Q: How can developers automate the provisioning of cloud infrastructure?

A: Developers can automate the provisioning of cloud infrastructure by using IaC (Infrastructure as Code).

Q: What is a common approach to deploy and manage cloud infrastructure?

A: A common approach to deploy and manage cloud infrastructure is to use IaC solutions.

Q: What benefits does using a declarative IaC approach offer in terms of application deployment?

A: Using a declarative IaC approach ensures application deployment is more consistent and reliable.

Q: How does using Infrastructure as Code (IaC) prevent configuration drift?

A: IaC prevents configuration drift by maintaining infrastructure needs in code instead of manual configurations.

Q: Why should developers use IaC tools for managing and provisioning cloud infrastructure?

A: Developers should use IaC tools because they automate infrastructure deployments and ensure consistency.