Scaling New Heights: Modernising Your Application with Kubernetes

February 27, 2025
Sergio Rua

Introduction

Remember when cloud computing felt like something only the big players could afford? Well, Kubernetes is going through that same transition right now. What was once the playground of tech giants is now accessible to companies of all sizes.

If you’re running applications that still rely on traditional deployment methods, you’re probably familiar with the headaches: inconsistent environments, deployment failures, and that dreaded 3 AM call when something breaks. Kubernetes might sound complex (and yes, it has its learning curves), but it’s becoming increasingly accessible as a solution to these everyday problems.

What’s Kubernetes Anyway? (The Non-Technical Explanation)

Let’s cut through the jargon. At its heart, Kubernetes is a system that helps you manage containerised applications. Think of containers as standardised packages for your software — they contain everything needed to run your application, regardless of where they’re deployed.

Kubernetes (or K8s as the cool kids call it) acts like an orchestra conductor, making sure all these containers work together smoothly. It handles things like:

  • Starting up your application when needed
  • Making more copies when there’s high demand
  • Healing itself when things go wrong
  • Moving workloads around to use your resources efficiently

Kubernetes automates these processes, freeing your team to focus on more strategic work rather than putting out fires.

Consistency Across Environments

Have you ever heard developers say, “But it works on my machine”? With containerization and Kubernetes, that phrase becomes extinct. Your application runs the same way in development, testing, and production environments.

Resource Efficiency

If your servers are running at 20% capacity because you’ve overprovisioned to handle peak loads, Kubernetes can help. It packs applications more efficiently onto your infrastructure, potentially reducing your cloud bill significantly.

Faster Recovery from Failures

When (not if) something goes wrong, Kubernetes can automatically restart failed components or redirect traffic away from troubled instances. This often happens before your monitoring system even has time to alert your team.

Gradual Modernization

A common misconception is that adopting Kubernetes means rewriting everything at once. The reality? You can start small, perhaps with just one application or service, and expand from there.

The only thing I would recommend you take on from day one is automation. For some small companies that manage just a few servers and are used to doing things manually, it may sound like it adds a lot of complexity but the initial headache pays off when you try to scale up.

If you are already using automation, see if your existing tools support Kubernetes. You do not want to add more complexity when you’re starting. Stick to what you know. For example, Ansible does a pretty good job of it. It has roles and collections for all the most common tasks such as managing configurations, helm charts, etc.

For robust automation, Terraform stands out. With its Kubernetes, Helm, and numerous other providers, you can orchestrate your entire infrastructure as code. If you’re not already leveraging an automation tool, Terraform’s versatility and declarative approach make it a compelling choice for managing your Kubernetes deployments and beyond.

Start with Managed Services

Cloud providers offer managed Kubernetes services (like EKS from AWS, GKE from Google, or AKS from Microsoft) that handle much of the underlying complexity. These services take care of the cluster management heavy lifting while giving you the benefits. Shop around before you commit. There are plenty of small players with very competitive prices.

If you prefer to stay on-premises, be it due to budget constraints, stringent regulatory compliance, low latency requirements, or the need to maintain legacy systems, you could consider user-friendly alternatives such as Rancher.

Identify a Suitable First Project

Not every application should be your Kubernetes guinea pig. Look for something important enough to matter but not so critical that downtime would be catastrophic. New projects or applications already experiencing deployment issues are good candidates.

Build Skills Incrementally

Your team won’t become Kubernetes experts overnight, and that’s okay. Start with the basics — deploying simple applications and understanding core concepts. Complexity can come later as your comfort level increases.

Technical considerations aside, the human element often determines whether a Kubernetes initiative succeeds or fails. Change can be scary, especially for teams comfortable with existing processes.

Creating a culture that embraces experimentation and learning is crucial. Celebrate small wins, share knowledge openly, and expect some stumbles along the way. Remember that Kubernetes expertise is increasingly valuable in the job market — your team members may actually appreciate the opportunity to develop these skills.

When Kubernetes Might Not Be the Answer

It’s worth noting that Kubernetes isn’t always the right solution. If you’re running simple applications with predictable loads and minimal complexity, the overhead of Kubernetes might outweigh its benefits. Be honest about your actual needs rather than adopting technology for technology’s sake.

Final words

Whether you embrace Kubernetes now or later, containerisation is the future of application deployment. The consistency, portability, and automation it enables are too valuable to ignore in an increasingly competitive landscape.

We work with organisations of all sizes — from startups to enterprise-level companies — to adopt Kubernetes through a proven, step-by-step process:

  • Containerization: Converting traditional applications into container-ready workloads and establishing best practices for image management
  • Kubernetes Migration: Planning and executing safe transitions from legacy infrastructure to Kubernetes orchestration
  • Lifecycle Management: Implementing robust monitoring, scaling, and maintenance processes to ensure long-term success
  • Automation and GitOps: Streamlining operations through CI/CD pipelines and infrastructure-as-code principles

Ready to start your Kubernetes journey? Contact our team for a free consultation to discuss how we can tailor our approach to your specific needs and challenges.

I, for one, welcome our new robot overlords”

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