.jpeg)
The Cloud Stack Explained
Think of cloud computing as a layered system:
-
IaaS (Infrastructure-as-a-Service): Provides the base infrastructure—servers, storage, and networking. You manage the operating system, applications, and data while the provider maintains the hardware. Best for teams that need flexibility and control.
-
PaaS (Platform-as-a-Service): Offers a managed environment for building and deploying applications. The provider handles infrastructure and runtime management, leaving you to focus on coding and development. Ideal for accelerating development cycles.
-
SaaS (Software-as-a-Service): Delivers ready-to-use software accessible through the cloud. Everything is managed by the provider, and users simply log in and start working. Perfect for common business functions like email, CRM, and collaboration.
How to Choose the Right Model
Your decision should reflect your current cloud maturity, IT capabilities, and business goals:
-
IaaS: Quick Migration (Lift-and-Shift)
-
Best when moving existing applications to the cloud with minimal changes.
-
Use cases: website hosting, storage, disaster recovery, and legacy system support.
-
-
PaaS: Modernization and Agility
-
Suitable for organizations that want to build, test, and deploy apps quickly without worrying about infrastructure.
-
Use cases: API development, IoT applications, and scalable web apps.
-
-
SaaS: Simplicity and Convenience
-
Perfect when an out-of-the-box solution exists for your needs.
-
Use cases: CRM systems, productivity suites, and financial management tools.
-
Cost Considerations
-
SaaS: Predictable subscription pricing, minimal IT overhead.
-
PaaS: Pay for resources consumed, reduced operations workload.
-
IaaS: Flexible pricing but higher responsibility for security and maintenance.
Final Thoughts
Industry experts recommend starting with the highest abstraction level possible. If a SaaS solution meets your needs, use it. For custom applications, consider PaaS or serverless options. Only choose IaaS when you need full control of the environment.
By aligning your choice with your business goals, cloud journey stage, and cost structure, you can build a cloud strategy that delivers agility, scalability, and long-term value.
