🚀 Introduction: Why Infrastructure as a Service (IAAS) Matters?

Source: Dev.to

☁️ What is IaaS (Infrastructure as a Service)?

IaaS stands for Infrastructure as a Service. It provides complete control over core infrastructure resources such as:

• Virtual Machines (VMs)
• Storage
• Networking
• Operating Systems

With IaaS, you rent infrastructure from a cloud provider instead of buying physical hardware. You can configure these resources exactly as needed to run your own applications.

🛠️ How IaaS Works

In an IaaS model you can:

• Install your own operating system
• Configure custom applications
• Manage security settings, networking, and software

The cloud provider is responsible for:

• Physical servers
• Data centers
• Networking hardware

You are responsible for:

• OS management
• Patching
• Backups
• Application upgrades
• Security configurations

This gives you maximum flexibility and control over your environment.

🔐 Admin Responsibilities in IaaS

• Patching: Keeping the OS and software packages up to date to fix bugs and security vulnerabilities.
• Backups: Protecting your data from loss.
• Upgrades: Updating applications and systems as required.

These responsibilities make IaaS ideal for teams that need deep customization and control.

💰 Pay‑Per‑Use Model

• You pay only for the virtual machines you run.
• Charges depend on usage (CPU, memory, storage, time).

This helps businesses reduce upfront costs and scale resources as needed.

🔄 Lift and Shift in IaaS

Lift and Shift means migrating applications from on‑premises servers to cloud infrastructure without changing the application architecture. IaaS is perfect for this because:

• You get full OS control.
• Existing applications work as they are.
• You still benefit from cloud scalability and reliability.

🎯 Your Takeaway: When Should You Choose IaaS?

IaaS is the ideal choice when:

• You need full control over the operating system.
• You want to customize applications deeply.
• You are migrating legacy applications to the cloud.
• Your team can manage infrastructure and admin tasks.