What is Cloud Computing?
Published: 2023-08-21 09:08:39

In this blog, I will discuss what is cloud computing. Before we go to the technical definition of cloud computing, let's start with brief discussion on what can technology help in our lives.

Today, technology enables you to extend your activities beyond physical, geographical, and time limits. You live in the digital world, and technology plays an integral role in your life.
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You use technology to _get educated, shop online, keep track of your finances, secure your home, communicate with others, entertain yourself_, and more.

We already know what can we get with the help of the technology. Now, let's move on the basic definition of cloud computing.

In its most basic definition, the **_cloud_** is a computer that is located somewhere else, accessed via the internet, and used in some way. 
**_Web services_** is another name for what people call the cloud.

The **_cloud_** comprises server computers in large data centers in different locations around the world. People use the cloud for various things. Think storing data securely, sending emails, creating virtual computers, and building websites. Doctors might utilize the cloud to personalize patient treatments, banks could rely on it to quickly detect and prevent fraud, and gaming companies may use it to host online multiplayer games.

**Cloud computing** as it most technical definition is the on-demand delivery of compute power, database, storage, applications, and other IT resources via the internet with pay-as-you-go pricing. These resources run on server computers that are located in large data centers in different locations around the world. When you use a cloud service provider like Amazon Web Services (AWS), that service provider owns the computers that you are using. These resources can be used together like building blocks to build solutions that help meet business goals and satisfy technology requirements.
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**Who is using cloud computing?**
Organizations of every type, size, and industry are using the cloud for a wide variety of use cases, such as data backup, disaster recovery, email, virtual desktops, software development and testing, big data analytics, and customer-facing web applications. For example, healthcare companies are using the cloud to develop more personalized treatments for patients. Financial services companies are using the cloud to power real-time fraud detection and prevention. And video game makers are using the cloud to deliver online games to millions of players around the world.

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**Benefits of cloud computing**

1. **Agility** - The cloud gives you easy access to a broad range of technologies so that you can innovate faster and build nearly anything that you can imagine. You can quickly spin up resources as you need them–from infrastructure services, such as compute, storage, and databases, to Internet of Things, machine learning, data lakes and analytics, and much more.
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You can deploy technology services in a matter of minutes, and get from idea to implementation several orders of magnitude faster than before. This gives you the freedom to experiment, test new ideas to differentiate customer experiences, and transform your business.

1. **Elasticity** - With cloud computing, you don’t have to over-provision resources up front to handle peak levels of business activity in the future. Instead, you provision the amount of resources that you actually need. You can scale these resources up or down to instantly grow and shrink capacity as your business needs change.
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1. **Cost savings** - The cloud allows you to trade fixed expenses (such as data centers and physical servers) for variable expenses, and only pay for IT as you consume it. Plus, the variable expenses are much lower than what you would pay to do it yourself because of the economies of scale. 
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/s6xev6bh6f9b82hhfl2m.png)
1. **Deploy globally in minutes** - with cloud computing, you can expand to new geographic regions and deploy globally in minutes. For example, AWS has infrastructure all over the world, so you can deploy your application in multiple physical locations with just a few clicks. Putting applications in closer proximity to end users reduces latency and improves their experience.
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/i7nqfltj6now77dv5bej.png)

Here's a breakdown of key concepts of cloud computing for beginners:

1. **Remote Servers** - Instead of running programs or storing data on your personal computer or local servers, cloud computing allows you to use powerful computers located in data centers around the world. These servers are maintained by cloud service providers.
1. **On-Demand Access** - Cloud computing provides you with on-demand access to computing resources. You can easily scale up or down based on your needs. This flexibility is particularly useful when you need more resources for a short period of time.
1. **Types of Cloud Services:** I have a separate discussion with regards to the types of cloud services. You may check the [Essentials of Cloud Computing](https://dev.to/jtorresdeguzman14/essentials-of-cloud-computing-377g) blog post.
1. **Cost-Efficiency** - Cloud computing can be cost-effective because you pay only for the resources you use. There's no need to invest upfront in expensive hardware or infrastructure.
1. **Scalability** - Cloud services allow you to easily scale up or down based on your requirements. This is particularly useful for businesses with varying workloads or seasonal demands.
1. **Data Backup and Disaster Recovery** - Cloud providers typically offer data redundancy and backup solutions, ensuring your data is safe and easily recoverable in case of unexpected events.
1. **Collaboration** - Cloud computing enables easy collaboration as multiple users can access and work on the same files or applications from different locations.
1. **Examples of Cloud Services** - Common examples include Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform, Dropbox, Google Drive, and Microsoft 365.
1. **Security Considerations** - While cloud providers invest in security measures, it's important to take steps to secure your data and applications as well. This may involve proper authentication, encryption, and access controls.
1. **Internet Dependence** - Since cloud computing relies on internet connectivity, a stable and reliable internet connection is crucial for accessing and using cloud services.

Overall, cloud computing offers convenience, flexibility, and cost savings for individuals and businesses by abstracting away the complexities of managing physical hardware and infrastructure.