There are many short names used in Cloud Service Models, and sometimes it may be confusing.
When you get started with Cloud Computing, there are many things to learn. In this article, I will talk about some of the popular cloud service models that are widely used and are a must-know for aspiring cloud architects.
Three cloud service models PaaS, SaaS, and IaaS are the most important among all, so I will start with them.
PaaS stands for Platform as a Service.
Here, your cloud provider gives you the complete platform to use. When I say the complete platform to use, it means the provider takes care of all the underlying parts of the infrastructure. For example, your servers are taken care of, and your virtual machines are taken care of, you are given some predefined tools which you can use to build your applications.
Some of the benefits of using PaaS are the following.
Faster development and delivery
Create/Deploy applications on the fly
Provides backup, recovery and data security
Easily accessible from multiple locations (by multiple teams)
It means a cloud provider is giving you complete software like servers, databases, and application codes in the form of service.
For example, Gmail, where you exchange emails without worrying about what is happening in the background. All you have to do is type your email, and it gets delivered to the location or to the person you want to deliver it. You are not concerned about how the platform works, what are the security concerns, what if the server goes down, or where is the mail getting stored, it’s none of your concern.
The service providers are providing you a complete software or an application in the form of service, that is why this architecture is called Software as a Service.
No need to install anything
Resource managed by the Vendor
Ex – Freshdesk as a helpdesk and self-service solution.
IaaS stands for Infrastructure as a service.
The definition of infrastructure as a service means only the infrastructure is given to you, everything else is something that you put in the way you want it, and then you use it. IaaS provides computing architecture and infrastructure apart from that data storage, virtualization servers, and networking.
Let me explain it with an analogy.
For example, suppose you rent a house, now the owner gives you a house and says use it the way you want to and pay me the rent. So, you are paying the owner for the house, and when you get inside the house, you realize that it only has a bed and a table. Apart from that, you need to put in the kitchen utensils, and you need to set up the house the way you want to use it, and then you can go ahead and use that house. Basically, you are setting up your infrastructure.
It provides analytics software over the cloud on the subscription-based model. It has become a crucial option for businesses to bypass upfront new capital costs and adopt new business process requirements easily.
You can use AaaS for Predictive analytics, Data Analytics, and Business Analytics, to find insights and trends on the data. In this age of Big Data, AaaS is a savior. It can clean, analyze, and store insights from Big data in a scalable and cost-effective manner.
BaaS stands for Backend as a Service. It takes care of all the backend services of an application, and the developers can focus only on writing and maintaining the frontend side of the application. It provides backend services like database management, user authentication, cloud storage, hosting on the cloud, push notifications, etc.
If I take the example of amazon.com, it is one of the most popular e-commerce websites worldwide. What you see as a user is a friendly website or an app, but a lot of things are happening at the backend. BaaS can help Amazon with storage, user management, payment gateway, recommendation system, push notifications to its user for the latest offers, and many more backend functionalities.
Data as a Service (sometimes also called DaaS) is a service model that provides pre-aggregated and pre-calculated data, which can provide better insights, and you can make better business decisions. It uses the cloud to provide data storage, data integration data processing, and data analysis services using networks.
DBaaS is managed by public and private cloud providers. It provides database functionalities as a service to internal/external customers. Application developers do not rely on database administrators for database management when using Database as a Service.
Benefits of using DBaaS.
Reduces operational cost
Easier to deploy and manage
Supports all sizes of business
Pay for what you use
Automates database operations
Clustering setup in minutes
High-availability across regions
Ex – Scalegrid for MySQL, PostgreSQL, Redis, MongoDB
DaaS stands for Desktop as a Service.
Virtual desktops are hosted over the cloud on any device from anywhere. It offers a subscription-based model and is multi-tenant. It improves data security and enhances remote productivity as it provides services in all geographies.
Virtual Desktop Infrastructure (VDI) has a lot of similarities to DaaS. The difference between the two is that the infrastructure on DaaS is hosted over the cloud, whereas the infrastructure of VDI is mostly located on-premise.
Ex – V2 Cloud
FaaS stands for Function as a Service.
It helps to remove the complexities of servers and provides a serverless architecture. You can focus on the business logic, and everything in the background is taken care of by service providers—all you have to worry about code development.
AWS Lambda is an example of FaaS, which has been developed by Amazon. Azure and GCP also support FaaS through Azure functions and Google Cloud functions.
Cloud-based security is where an application or infrastructure is secured by a cloud-based security provider (CSBP). A simple example of Security as a Service is antivirus software provided by an organization like Avast, Norton, McAfee, etc.
Other security services like anti-malware, firewall, penetration testing, intrusion detection, authentication, spam filtering, and Identity and Access Management (IAM) are a part of SECaaS.
Anything as a Service (XaaS) refers to a cloud service model where different types of services, including products, applications, technologies, games, tools, and more, are delivered to users on their devices via the cloud, instead of on-premises. It’s an umbrella term covering anything that vendors supply to users on the cloud and enables remote access.
XaaS has transformed modern businesses, and now wide-ranging IT services and resources are delivered using this. The examples of XaaS can be SaaS, PaaS, IaaS, CaaS, DaaS, DBaaS, CaaS, and more. The XaaS model is applied across multiple industries, from IT, banking, and finance, to healthcare, manufacturing, and education.
Some of the benefits of XaaS are:
Businesses can use XaaS to buy exactly what they need from vendors and pay for the resources they use, unlike traditional systems. It helps them cut expenses significantly and increase the return on investment (ROI).
IT companies can streamline their operations effectively using XaaS and free up their resources and capabilities for innovation.
XaaS can help them become more agile and easily implement digital transformation.
XaaS enables modern businesses to adapt easily to rapidly changing market demands with relevant applications and solutions and enjoy the flexibility of scaling up or down based on their requirements.
So, these were the important cloud service models that you will come across frequently while working with cloud solutions. Go ahead and try out any one of the cloud service models mentioned above using any one cloud service provider (AWS, Azure, Google Cloud) to get a feel of it.
Cloud Computing is a modern solution for modern businesses and users. It allows us to share or use resources directly from a cloud server over the Internet, making this technology more efficient, fast, and cost-effective for everyone.
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