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Composable Infrastructure: The Complete Explanation

Olena Teselko

If you're looking to optimize and future-proof your web presence, you might have heard of composable infrastructure. But there's also composable architecture and composable software to consider. What's the difference between all of these concepts? Let's see in detail. 

Section titled What is composable infrastructure?

Composable infrastructure refers to the physical resources, such as computing, storage, and networking components, that can be dynamically pooled and allocated based on the specific requirements of applications or workloads. The idea is to treat these devices as services instead. 

Composable infrastructure also involves creating a virtualized environment where resources can be reconfigured and re-ordered programmatically via software to provide maximum utilization, flexibility, and scalability.

A blue flow chart explaining composable infrastructure

Composable infrastructure allows flexible pooling and allocation of computing, storage, and networking resources based on application needs.

Section titled What is composable architecture? 

While these two concepts are similar, composable architecture is broader as it extends beyond just the physical infrastructure. Composable architecture involves the entire IT environment, including hardware, software, applications, and services.

Basically, composable architecture refers to a framework of decoupling and rearranging all the tech-related resources, such as physical ones, applications, or services, to get the most efficient ecosystem that is modular, flexible, and adaptable to change.


Learn more about composable architecture in our ultimate guide.

Section titled What is composable software? 

Composable software incorporates smaller, modular components and services than its counterparts. It is designed with a modular and flexible architecture so that it can be easily integrated, extended, and reconfigured to meet specific business needs. That's why it typically refers to the MACH principles, which stand for Microservices, API-first, Cloud-native, Headless.

Image explaining the difference between composable infrastructure, architecture, and software.

Difference between composable infrastructure, architecture, and software.

Section titled What are the components of composable infrastructure?

Composable infrastructure is built upon three key components that work in harmony to provide the agility and efficiency it promises.

Section titled 1. Composable hardware

The hardware layer consists of computing, storage, and networking resources that devs can abstract into virtualized pools. Engineers can select these resources based on application requirements for better resource utilization.

Section titled 2. Composable software 

IT administrators can dynamically allocate and configure resources as needed through a software-defined architecture, responding swiftly to changing workload demands.

Section titled 3. API-driven automation

APIs are the driving force behind composable infrastructure as they enable the automation of resource provisioning, allocation, and management. This automation minimizes manual intervention, reduces human error, and speeds up IT operations.

Section titled How does a composable infrastructure look in practice?

In a nutshell, composable infrastructure can be described as a fluid environment where you can allocate resources as needed to build up the systems that you need to get the job done. 

Image illustrating composable infrastructure

With such a modular approach, you can arrange bare metal devices as you wish or access various types of storage from one place. You can deliver drivers and updates to your system by temporarily taking some systems offline in a high-availability model while updating and refreshing them. You can also update and install the operating system within minutes. Additionally, you can configure the network and set up the infrastructure to provide the desired service, all within one box.

Composability also gives you the flexibility to add capacity freely to the pool, eliminating many decisions typically required in a traditional infrastructure setup.

In a composable infrastructure system, all decisions are driven by software definitions, policies, and rules that you establish as a customer. The technology seamlessly executes these directives. This approach allows you to build systems more rapidly, efficiently, and consistently.

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Section titled What are the benefits of a composable infrastructure?

The composable approach has been gaining traction in recent years, and there are multiple reasons for that. Let's see why companies switch to composable infrastructure:

Section titled 1. Resource efficiency

Traditional converged infrastructure often faces the challenge of over-provisioning, where resources are allocated but remain underutilized. Composable infrastructure, on the other hand, ensures that resources are allocated exactly when and where they are needed, preventing wastage.

Section titled 2. Scalability

Composable infrastructure is scalable by its nature. New parts, such as servers, storage, or networking resources, can be seamlessly added to the existing pool, allowing organizations to scale up or down quickly in response to varying workloads. 

Section titled 3. Adaptability

Composable systems enable IT teams to reconfigure resources on the fly, ensuring that applications have the necessary resources to perform optimally. Whenever a new innovative solution appears on the market, tech departments can instantly implement it to stay on the curve of the competition.


Composable infrastructure does not tie you to a single computing technology or concept. In fact, companies can use anything: virtual machines, bare-metal deployment, containers, and cloud-native applications, or even all together. 

Section titled 4. Cost Savings

Organizations can significantly cut down on hardware and operational costs by optimizing resource usage and reducing the need for over-provisioning. 

Section titled 5. Easy to manage

Since all the infrastructure is managed from one centralized location, DevOps can easily provision the needed resources and return them back depending on their current needs. Managing all the storage from one place also helps to reduce silos and speed up the operations. 

Additionally, composable infrastructure is way smarter than average infrastructure since it is operated by software. Because of that, it requires less maintenance from the tech team. For instance, it can detect if something is not working correctly, like a hardware asset or any other issue, and suggest ways to solve the problem. The system can automatically spot new possibilities to optimize the deployment and add or decrease the needed resources.

Section titled Conclusion

Composable infrastructure empowers you to dynamically pool and allocate resources based on your specific needs. When leveraged carefully, it can help optimize your technology's operations.