Terraform, developed by HashiCorp, is a renowned Infrastructure-as-Code solution that stands out for its extensive support of providers and resources. It currently holds the top spot in popularity among Infrastructure-as-Code solutions. Terraform code is crafted using HashiCorp Configuration Language (HCL), a user-friendly configuration language.

Terraform was originally created to manage infrastructure, but it has since grown in popularity and is now used to provision and configure resources in any system that has an API. This means that Terraform can be used to manage databases, messaging systems, content management systems, and more, in addition to cloud platforms like AWS, Azure, and Google Cloud Platform. Terraform's versatility and ease of use make it a valuable tool for managing complex systems across a wide range of technologies.

• With Infrastructure as Code, you can gain an insight into your infrastructure status swiftly, as it serves as a living document offering a snapshot of your systems' state and configuration.

• Infrastructure as Code allows you to improve your infrastructure using code itself, making the process of introducing new services, upgrading existing ones, or modifying configurations flexible and adaptable.

• Infrastructure as Code facilitates making system-wide modifications efficiently, ensuring consistency across your entire system and reducing error potential.

• Continuous integration principles from software development can be applied to your infrastructure management through Infrastructure as Code, enabling automation in testing and deployment of infrastructure changes.

• Infrastructure as Code enables you to provision entire systems from scratch quickly and reliably, proving to be advantageous in testing, development, and disaster recovery scenarios.

• Monitoring infrastructure state and implementing incremental changes is made possible with Infrastructure as Code, improving auditability and change management.

• By automating repetitive tasks and reducing manual intervention, Infrastructure as Code reduces potential human errors and increases efficiency.

• Infrastructure as Code enhances collaboration and transparency by serving as a common language understandable by both operations and development teams.

• Infrastructure as Code allows for the creation of standard templates for your infrastructure setup that can be used to replicate your environments consistently across different stages of the application lifecycle and multiple projects.

• Infrastructure as Code improves overall security posture and simplifies compliance auditing by allowing the incorporation of security configurations and compliance requirements directly into your infrastructure code.

• Terraform offers the ability to create a wide range of resources across numerous Cloud Providers and SaaS platforms.
• To enable their users to utilize Infrastructure-as-Code, many platforms and products often begin by developing a Terraform Provider.
• Various other Infrastructure-as-Code solutions either incorporate Terraform's existing codebase or fully rely on it.
• For end-users, this scenario facilitates the early adoption of new technologies through Terraform, compared to other Infrastructure-as-Code solutions.
• Beyond its extensive support for a multitude of resources and providers, there is a vast amount of knowledge being shared about Terraform.
• A plethora of tools is being developed around Terraform to enhance its functionality and usability.
• Makes your infrastructure more easily understandable using declarative configuration.
• With Terraform CDK, infrastructure can be created using various different programming languages (Python/Java/etc).
  

Our experience with Terraform have helped us build up knowledge and tools to help our clients.

Some of the things we did:

• Migrated existing infrastructure into Terraform
• Divided Terraform projects into smaller units for modularity and separation of concerns using Terragrunt
• Built terraform modules libraries to reduce code duplication and allow easier system-wide changes using Terragrunt
• Built continuous integration processes for Terraform projects
• Refactored entire projects to reduce duplication
• Used Terraform to make configuration the only difference between environments
• Deployed resources on Kubernetes using Terraform with both native K8s resources as well as with the Helm Terraform Provider
• Parsed, formatted and displayed elaborate Terraform Plans outputs to help the Engineering Team quickly and fully understand the changes
• Configured DAGs to run multiple Terraform apply steps to manage complex infrastructure changes
  

All of the above experience helped us accumulate significant knowledge for many Terraform use-cases on various cloud providers, and allowed us to build useful resources for both new and experienced Terraform users.

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• Modifying your existing infrastructure codebase safely and efficiently.
• Develop a comprehensive plan and strategic roadmap for adopting Infrastructure-as-Code in your projects.
• Efficiently transitioning your existing infrastructure into the Terraform (TF) ecosystem.
• Adapting and organizing your Terraform projects to meet your company's unique needs.
• Using Terragrunt to ensure that your infrastructure projects adhere to Terraform best practices.
• Conduct a thorough review and assessment of your current Terraform codebase.
• Creating reusable Terraform Modules to decrease code duplication and simplify self-service infrastructure creation for developers.