AWS By DevTechToday February 26, 2024

Demystifying Cloud Computing Models in AWS: IaaS, PaaS, and SaaS

Cloud computing has been a significantly valuable tool for developers and IT departments, allowing them to focus on their core responsibilities while quickly eliminating the need for equipment procurement, maintenance, and capacity planning tasks. As cloud computing has gained immense popularity, it has introduced several models and deployment strategies to cater to the diverse needs of users. These models include Platform as a Service (PaaS), Infrastructure as a Service (IaaS), and Software as a Service (SaaS). Understanding the differences between these cloud computing models is essential in selecting the deployment strategies and services for your businesses. So, let’s get right through the cloud computing models in AWS.

Types of Cloud Computing Models in AWS

There are three main cloud computing models in AWS: IaaS, PaaS, and SaaS.Let us have a look:

  1. Infrastructure as a Service (IaaS) Cloud Model

Infrastructure as a Service (IaaS) is like renting the basic building blocks of your computing and storage from a cloud provider, so you don’t have to buy and manage your physical servers or data centers. It has completely transformed how companies acquire and oversee their cloud-based resources. Since many organizations have moved their old-fashioned in-house systems and applications to the public cloud, this shift has helped them avoid expenses and work involved in data backup and archiving activities. Also, several advanced cloud service providers, such as AWS, Microsoft, Google, IBM, Alibaba, etc., stand out. These companies provide top-notch services to help businesses streamline their IT operations and save time and money.

Let’s understand this model with an example: When you lease a car, you have access to the vehicle but are always responsible for how you use it, maintain it, and any customizations you want in the car. It’s your car for a set period, but you are responsible. In the IaaS model, the virtual cloud infrastructure, such as servers, storage, and networking, is under your control. You are responsible for configuring and managing the software and applications that run on this infrastructure, just like leasing a car. You have the keys to the infrastructure, but you are responsible for its care and operation.

Services Provided to IaaS Cloud Users: What to Anticipate?
  • Service Functionality
  • Enterprise and Hybrid Workload Compatibility
  • DevOps Integration Support
  • Availability of Cloud Services
  • Regulatory Compliance
  • Safeguarding Data
  • Identity and Access Management (IAM)
  • APIs and Integration
  • Cybersecurity Measures
  1. Platform as a Service (PaaS) Cloud Model

Platform as a Service (PaaS) is a cloud computing model that provides a more streamlined and user-friendly way for developers and businesses to build, deploy, and manage their applications in the cloud.  AWS Lambda is just one example of a PaaS offering that removes your hassles of dealing with the hardware and software. Instead, it focuses on making it easy to create or manage your applications in the cloud. You don’t have to focus on buying or maintaining servers or handling complicated tasks. Here, you can concentrate on building and running up your apps while PaaS handles all the other things. AWS Lambda is a flexible tool that helps you use various AWS services to make your applications work seamlessly.

Let’s look at an example: When you rent a car, you get to use the vehicle for a specific time, but you don’t worry about owning it, fixing it, or even the maintenance. You simply rent it for the trip. Similarly, PaaS provides a place to create and run software applications. Here, you can easily create your apps without dealing with all the technical stuff, such as setting up servers.

Services Provided to PaaS Cloud Users: What to Anticipate?

Some of the services that a PaaS cloud user might usually anticipate are as follows:

  • Development Tools
  • Application Hosting
  • Database Management
  • Middleware Services
  • Monitoring and Analytics
  • Security Features
  • Integration and APIs
  • Cost Management
  • DevOps Support
  1. Software as a Service (SaaS) Cloud Model

AWS’s Software as a Service (SaaS) model refers to delivering enterprise software applications to the cloud. This approach helps businesses provide solutions more quickly and easily. While there might be particular technical challenges, SaaS on AWS is a crucial component of their cloud strategy, driving transformation in many organizations.

For example, When you take an Uber, you don’t need to own a car; you can just use their app to get a ride. Only the ride will be billed to you; you are not responsible for the vehicle. Similarly, when you use SaaS, you do not have to manage or own the software; instead of installing and managing the software on your computer, you just need to access it over the Internet. The provider will maintain the hosting, ensuring everything works smoothly.

Services Provided to SaaS Cloud Users: What to Anticipate?
  • Software Applications in the cloud
  • Data Storage
  • Analytics and Reporting
  • Collaboration Tools
  • Subscription-Based Billing
  • User Training and Documentation
  • Data Backup and Recovery
  • Security
  • Support and Maintenance

Now that you have a grasp of the fundamental cloud model types, it’s essential to formulate an AWS cloud strategy to operate and maintain your business efficiently.


In conclusion, understanding the cloud computing models in AWS is essential for businesses looking to leverage the power of the cloud. Whether you are looking for more control with IaaS, simplifying development with PaaS, or accessing ready-to-use software through SaaS, AWS offers a wide range of solutions. By aligning your strategies with the suitable AWS model, you can innovate, scale your operations, and walk on a successful cloud journey that transforms your business’s digital transformation. To ensure efficiency and expert guidance along this path, partnering with a provider of AWS cloud consulting services is always advisable. Their expertise can help you navigate the complexities of AWS effectively.