What is Public Cloud? - Benefits of it

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StarAgile

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Oct 16, 2023

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The world of technology is constantly evolving, and cloud computing is one of the most significant advancements in recent times. Cloud computing has revolutionized the way businesses operate by providing a scalable, cost-effective, and efficient way to manage data and IT resources. 

Public cloud computing is one such type of cloud computing that has gained immense popularity in recent years. In this blog, we will delve deeper into public cloud computing, what it is, how it works, examples of public cloud computing, benefits, and much more.

What is Public Cloud?

Public cloud is a type of cloud computing service that allows users to access shared computing resources, such as storage, processing power, and applications, over the internet. These resources are managed and maintained by a third-party provider, and multiple users can access them on-demand. Public cloud services are typically offered on a pay-as-you-go basis, meaning that users only pay for the resources they use, rather than investing in costly infrastructure that they may not fully utilize.

The public cloud is a highly scalable and flexible solution that can adapt to the changing needs of businesses. It can handle high volumes of data and applications, making it an ideal solution for businesses of all sizes. Additionally, the public cloud can be accessed from anywhere with an internet connection, providing greater accessibility and convenience than traditional IT infrastructure. The public cloud is commonly used for a variety of applications, including website hosting, data storage and backup, software development, and testing, among others. Public cloud providers typically offer a range of services and configurations to meet the specific needs of their users.

How Public Cloud Computing Works?

Public cloud computing works by providing access to shared computing resources over the internet. These resources are typically hosted on servers located in data centers, which are managed and maintained by the cloud service provider. Users can access these resources on-demand, using a web-based interface or application programming interface (API).

The public cloud typically offers three main service models: 

1. Infrastructure-as-a-Service (IaaS)

2. Platform-as-a-Service (PaaS)

3. Software-as-a-Service (SaaS)

Each of these service models offers a different level of abstraction and functionality, allowing users to choose the level of control and flexibility they require.

1. Infrastructure-as-a-Service (IaaS)

In the IaaS model, users are provided with virtual machines, storage, and networking resources, which they can configure and manage as if they were physical servers. This model is often used for hosting websites, running applications, and data storage and backup.

  • Benefits of IaaS

Scalability: One of the significant benefits of IaaS is its ability to scale up or down quickly and easily. With IaaS, businesses can increase or decrease their computing resources to meet the demands of their business. 

Flexibility: IaaS provides businesses with the flexibility to customize their computing environment to meet their specific needs. With IaaS, businesses can choose the computing resources they need, such as servers, storage, and networking, and can configure them to meet their specific requirements. 

2. Platform-as-a-Service (PaaS)

Users are given a platform for creating, deploying, and administering applications under the PaaS paradigm. The platform often contains infrastructure for deploying and scaling applications, as well as tools and frameworks for creating, testing and deploying them.

  • Benefits of PaaS

Speed and Agility: PaaS provides a platform for developers to quickly build and deploy applications. With PaaS, developers can focus on developing their applications, rather than worrying about the underlying infrastructure. 

Cost-Effective: PaaS provides a cost-effective solution for businesses that want to develop and deploy applications. With PaaS, businesses can avoid the upfront costs of purchasing hardware and infrastructure and instead pay for the platform they use. 

3. Software-as-a-Service (SaaS)

In the SaaS model, users are provided with access to a fully-functional software application, which they can use without having to manage the underlying infrastructure. This model is often used for applications such as email, customer relationship management (CRM), and enterprise resource planning (ERP).

  • Benefits of SaaS

Easy Access: SaaS provides users with easy access to software applications. With SaaS, users can access software applications from anywhere with an internet connection, which ensures that they can work from anywhere and on any device.

Scalability: SaaS provides businesses with the ability to scale their software applications quickly and easily.

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Public Cloud Examples

There are many examples of public cloud computing services available today, ranging from small-scale applications to large-scale enterprise solutions. Some of the most popular public cloud services include:

  • Amazon Web Services (AWS) - AWS is one of the largest public cloud providers, offering a wide range of cloud computing services, including IaaS, PaaS, and SaaS. AWS is widely used for website hosting, application development, and data storage and backup.
  • Microsoft Azure - Azure is a public cloud platform offered by Microsoft, providing a range of services for developing, deploying, and managing applications. Azure is used for a wide range of applications, including website hosting, data storage and backup, and machine learning.
  • Google Cloud Platform - Google Cloud Platform is a suite of cloud computing services offered by Google. It offers a range of services, including compute, storage, networking, and machine learning, and is used for a variety of applications, including website hosting, data storage and backup, and application development.
  • Salesforce - Salesforce is a SaaS provider that offers a range of cloud-based solutions for customer relationship management (CRM), sales, and marketing. It is widely used by businesses of all sizes for managing customer relationships and improving sales and marketing performance.

Benefits of Public Cloud

Public cloud computing provides numerous benefits to businesses of all sizes. Some of the key benefits of public cloud computing are:

Cost-effective: Public cloud services are cost-effective as users only pay for what they use. There is no need for businesses to invest in expensive hardware or software, and they can scale up or down their usage as per their requirements.

Scalability: Public cloud services offer high scalability, which means businesses can quickly and easily scale up or down their usage as per their changing needs. This provides businesses with the flexibility to grow or shrink their operations without having to worry about infrastructure.

Accessibility: Public cloud services are accessible from anywhere with an internet connection. This means businesses can access their resources from anywhere, making it easier for employees to work remotely and collaborate with colleagues across different locations.

Reliability: Public cloud services are highly reliable as they are managed and maintained by cloud service providers who have extensive experience and expertise in managing complex infrastructure and applications.

Flexibility: Public cloud services offer businesses the flexibility to choose from a wide range of services, applications, and tools, allowing them to customize their cloud infrastructure as per their unique needs.

Security: Public cloud providers invest heavily in security measures to protect their customers' data and infrastructure. This means businesses can rest assured that their data is secure and protected from unauthorized access.

Public Cloud Computing vs. Private Cloud Computing:

Public cloud computing and private cloud computing are two types of cloud computing services that are commonly used by businesses. While both public and private clouds offer similar benefits, there are some key differences between the two.

Let’s first understand it through a table and then go into the details:

ParameterPublic Cloud ComputingPrivate Cloud Computing
OwnershipManaged and maintained by third-partyOwned and managed by the organization
AccessibilityAvailable to the publicAccessible only to the organization
ScalabilityHighly scalable and elasticScalability depends on the infrastructure
CustomizationLimited customization optionsHigh level of customization
SecurityShared security responsibilityOrganization has complete control over security
CostPay-as-you-go modelUpfront investment and ongoing maintenance costs
ComplianceService provider is responsible for complianceOrganization is responsible for compliance

 

1. Ownership and control: Private clouds are owned and controlled by individual businesses, while public clouds are managed and maintained by third-party service providers.

2. Security and compliance: Private clouds offer better security and compliance as businesses have more control over their infrastructure. Public clouds, on the other hand, offer a higher level of security as cloud service providers invest heavily in security measures.

3. Customization: Private clouds offer businesses more customization options as they have complete control over their infrastructure. Public clouds, on the other hand, offer limited customization options as they are managed and maintained by service providers.

4. Cost: Private clouds are more expensive to set up and maintain as businesses have to invest in hardware, software, and infrastructure. Public clouds are more cost-effective as businesses only pay for what they use.

5. Scalability: Public clouds offer higher scalability than private clouds as businesses can quickly and easily scale up or down their usage as per their changing needs.

6. Accessibility: Public clouds are more accessible than private clouds as businesses can access their resources from anywhere with an internet connection.

Public Cloud Security Concerns

While public cloud computing offers numerous benefits to businesses, there are also some security concerns that need to be addressed. Some of the key security concerns of public cloud computing are:

To address the below-mentioned security concerns, businesses must take proactive measures to secure their data and infrastructure. This includes implementing strong access controls, encryption, and monitoring systems to detect and prevent unauthorized access and data breaches. 

Security is one of the main concerns for businesses and organizations when it comes to using public cloud services. While public cloud services offer many benefits such as cost savings, scalability, and flexibility, there are also some security risks associated with them. Here are some of the main security concerns that businesses should be aware of when using public cloud services:

1. Data Security

Data security is a major concern for businesses using public cloud services. With public cloud services, data is stored on servers that are owned and managed by the cloud service provider. This means that businesses have to rely on the cloud service provider to ensure the security and protection of their data. While cloud service providers have security measures in place to protect data, businesses still need to be vigilant and take steps to protect their data. Some of the steps that businesses can take to protect their data include:

  • Encrypting their data
  • Implementing access controls
  • Regularly monitoring their data
  • Regularly backing up their data

2. Network Security

Network security is another major concern for businesses using public cloud services. With public cloud services, data is transmitted over the internet, and this creates the potential for security breaches. To prevent security breaches, businesses need to implement network security measures such as firewalls, intrusion detection systems, and virtual private networks (VPNs). These measures help to protect the network from unauthorized access and ensure the confidentiality, integrity, and availability of the data.

3. Compliance and Regulatory Issues

Compliance and regulatory issues are another concern for businesses using public cloud services. Businesses need to comply with various regulations and standards such as HIPAA, PCI-DSS, and GDPR, among others. Cloud service providers may not always be able to comply with these regulations and standards, and this can lead to legal and financial consequences for businesses. Therefore, businesses need to ensure that their cloud service providers are compliant with the relevant regulations and standards.

4. Cloud Service Provider Security

The security of the cloud service provider is another concern for businesses using public cloud services. Cloud service providers can be targeted by hackers and other cybercriminals, and this can lead to the compromise of their customers' data. Therefore, businesses need to ensure that their cloud service providers have strong security measures in place to protect their data.

5. Shared Environment

Public cloud services are shared among multiple users, and this creates the potential for security breaches. If one user's data is compromised, it can potentially affect other users as well. Therefore, businesses need to be aware of the shared environment and take steps to protect their data.

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Conclusion

Public cloud computing has become an essential technology for businesses and organizations. It offers many benefits such as cost savings, scalability, and flexibility. You can launch a prosperous career as a cloud professional if you develop technical and soft skills. While the route may be difficult, it can lead to a satisfying career with increasing demand and prospects for progress. A Devops course, devops certification, or devops training could be a huge help to you on this difficult path. You can get a solid foundation and clear up any doubts you may have with the help of these training programs. 

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