Three Reasons to Use Containers to Get Full Value from the Cloud


It’s not uncommon for IT departments to breathe a huge sigh of relief when a “lift and shift” project is complete. Moving to Infrastructure as a Service (IaaS) presents huge cost savings, particularly if the organization has not already been taking advantage of cloud-based services.

However, concluding cloud migration efforts at the IaaS stage is limiting, and you’re leaving money on the table.

The top three limitations are:

  • Application Resource Duplication
    Because in a lift and shift approach, the Operating System and application resources are replicated on each virtual machine.
  • Infrastructure Resource Waste
    The CPU, memory and storage space are defined upfront at the VM level and cannot be easily adapted to real application needs, especially when the audience peak is not predictable or constant over time. 
  • Lack of Flexibility
    VMs cannot be easily manipulated across on-premise, private, public or hybrid Linux/Windows cloud environments.

In order to take full advantage of cost savings opportunities in cloud, organizations can look to Containers as a Service (CaaS). CaaS enables more cost savings opportunities and enhances flexibility for app provisioning in the cloud in three primary ways:

  • Higher Scalability and Lower Operating Expenses
    The underlying running environment (OS, middleware, libraries, technology stacks, etc.) can be mutualized between different containerized applications, where infrastructure resources are smartly consumed. This could include, for example, elastic consumption to avoid waste of CPU, memory and storage.
  • Easier Re-Use
    CaaS supports the re-use and deployment of safe and up-to-date components for smarter application lifecycle management.
  • Faster Time-to-Market
    CaaS can shorten the delay between feature implementations, integrations and deployment in production.

In addition to these immediate gains, CaaS can help teams reconcile Dev and Ops practices, helping them work closer together on common and shared concepts, practices and tools. This alignment between Dev and Ops is increasingly important as organizations move beyond IaaS to Platform as a Service (PaaS).  

Michael Muller
Michael Muller Product Owner Cloud-Based Software Analytics & Benchmarking at CAST
Michael Muller is a 15-year veteran in the software quality and measurement space. His areas of expertise include code quality, technical debt assessment, software quality remediation strategy, and application portfolio management. Michael manages the Appmarq product and benchmark database and is part of the CAST Research Labs analysis team that generates the industry-renowned CRASH reports.
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