What is Infrastructure as Code (IaC)? A revolutionary approach to automating infrastructure construction
Hi, I'm Jon. Welcome to my blog, where I cover the latest topics in AI and technology in an easy-to-understand way, even for beginners. Today, I'll be talking about "Infrastructure as Code (IaC)." IaC is a method of managing and building IT infrastructure, such as servers and networks, using code (files written in a programming language). It automates traditional manual configuration, reducing errors and increasing efficiency. In this article, I'll provide an easy-to-understand explanation based on reliable sources, covering everything from the basics of IaC to the latest trends in 2025. For example, treating infrastructure as code, like cloud services, makes it easier to share and version control across teams.
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The background of IaC and why it is gaining attention now
IaC is a technology that emerged with the spread of cloud computing. For example, cloud platforms such as Amazon Web Services (AWS) and Microsoft Azure require infrastructure to be quickly scaled up. Manual configuration is time-consuming and prone to human error, so IaC, which automates the process with code, is effective. According to an InfoWorld article (published September 26, 2025), IaC treats infrastructure as code, allowing changes to be tracked using version control tools (e.g., Git), facilitating team collaboration.
A recent trend on X (formerly Twitter) is the benefits of automation using IaC. For example, a post from September 23, 2025, introduced IaC as the "secret sauce" that strengthens collaboration between developers and operations personnel and reduces errors. Furthermore, a discussion that has been ongoing since 2023 has pointed out that IaC facilitates communication in remote work. This information is based on general opinions confirmed from multiple posts on X.
Basic mechanisms of IaC and popular tools
To put it simply, IaC works by writing infrastructure settings as code and then running it with a tool to create the actual environment. For example, the number of servers and security settings can be written in a file, and the tool will automatically apply them. This makes it possible to reproduce the same environment multiple times, facilitating smooth transitions between testing and production environments.
- terraform: A popular IaC tool that supports various cloud providers. A blog post on September 26, 2025, introduced new features for Azure, which are expected to accelerate infrastructure construction.
- Ansible: A tool that is strong in configuration management. Many parts can be automated without writing code, making it suitable for beginners.
- pulumi: Writing infrastructure using a programming language (e.g., Python). A May 8, 2023 post from freeCodeCamp shares a practical IaC course using Pulumi.
Many of these tools are open source (freely available software), making them easy for individuals and small and medium-sized businesses to adopt. Incidentally, IaC also simplifies complex tasks with code, like Gamma, a tool that automates the creation of documents and slides using AI. Regarding Gamma,This articleIt explains this in detail, so if you're interested in automation, be sure to check it out.
Latest IaC Trends and Market Forecasts for 2025
As we enter 2025, IaC will continue to evolve. According to an article published by Terramate on January 20, 2025, the following trends are attracting attention. These are based on predictions from reliable specialist media.
- The Rise of OpenTofuOpenTofu, a fork of Terraform, will become popular. By 2025, community-driven development will advance, enabling more flexible IaC.
- Adoption of multi-IaC: The trend towards combining multiple IaC tools is on the rise, for example using Terraform and Ansible together to manage complex environments.
- AI Integration: AI will be incorporated into IaC, leading to automated code generation and optimization. A January 15, 2025 article on Fireup.pro points out that AI will shape the future of IaC.
- The development of platform engineering: Building an internal development platform with IaC and strengthening DevOps (integrated development and operations). A July 7, 2023 Medium article also discussed the transformative potential of IaC, but the 2025 update accelerates this.
In terms of market size, a September 30, 2024 report by Precedence Research predicts that the IaC market will be worth $1.06 million (approximately 14 billion yen) in 2024 and will grow to $9.40 million (approximately 125 billion yen) by 2034, representing a compound annual growth rate (CAGR) of 24.39%. This is due to increased migration to the cloud. Additionally, a September 24, 2025 article by Analytics Insight emphasizes that IaC improves DevOps efficiency and maintains consistency across diverse cloud environments.
From a security and automation perspective
IaC also enhances security. Kenji Kono's September 24, 2024, X post introduces how using IaC for privilege management and environmental isolation can ease operations. Automation allows you to codify security policies and ensure consistency. For example, his September 21, 2025, X post shares examples of the benefits of IaC in preventing manual errors.
Benefits of IaC and examples of its use in practice
The main advantages of IaC are as follows. Even beginners should be able to easily visualize its implementation if they understand these.
- Automation and efficiency: Infrastructure construction can be repeated as code. An InfoWorld article from September 26, 2025, emphasizes build automation.
- Reduced mistakes: Reduces manual work and prevents human error.
- ScalabilityEasily scale your infrastructure up and down, perfect for the cloud era.
- Improved collaboration: Code can be shared and reviewed. Great for remote work.
An example of its use is deploying web applications. Servers are defined in code, and production environments are automatically created. A Medium article from around September 2025 explains how to select an IaC stack that meets project requirements. Additionally, a September 23, 2025 post by Kubernetes with Naveen highlights how IaC bridges development and operations.
Like Gamma, an AI-powered document creation tool, IaC automates your everyday tasks.This articleGive it a try now and experience the magic of automation.
Jon's Summary
IaC is a technology that dramatically improves IT efficiency by codifying infrastructure management. Trends for 2025 include AI integration and increasing tool diversification, making it more accessible to everyone. Try it out with a small project first and experience the benefits of automation. We hope it will enrich your technology life.
Reference sources
- InfoWorld: “What is infrastructure as code? Automating your infrastructure builds” (September 26, 2025)
- Terramate: “Infrastructure as Code Predictions for 2025” (January 20, 2025)
- Fireup.pro: “The Future of Infrastructure as Code: Key Tools and Emerging Trends for 2025” (January 15, 2025)
- Precedence Research: “Infrastructure as Code Market Size to Reach USD 9.40 Bn by 2034” (September 30, 2024)
- Analytics Insight: “The Rise of Infrastructure as Code in Modern DevOps” (September 24, 2025)
- Various Medium articles (2023-2025)
- Related posts on X (formerly Twitter) (general discussion on IaC automation and trends 2020-2025)