Public vs Private Cloud: 11 Key Comparisons! TestGrid

public vs private cloud

Making a solid hybrid IT strategy requires selecting the appropriate cloud option for your company. It’s crucial to strike a balance between conflicting objectives, and it can occasionally be difficult to match the appropriate cloud infrastructure with the appropriate use case. So we’re here to help you in selecting Public and Private cloud with a detailed comparison.

Public cloud vs Private Cloud: Definition, Differences, and Tools

What Is A Public Cloud?

A public cloud is a model in which on-demand computing resources and infrastructure are managed by a third party and used by several enterprises via the Internet. 

Public cloud service providers may provide cloud-based services such as “Infrastructure as a Service” (IaaS), “Platform as a Service” (PaaS), or “Software as a Service” (Saas) to users for a monthly/annual payment model or pay-per-use subscription, removing the need for users to host these services on-site in their own data centre.

It is beneficial for businesses to work on projects with varied organizations, such as research institutes and NGOs, which require an infrastructure to handle many clients.

Your data is stored off-site via a public cloud solution on a shared server run and maintained by the service provider.

The Cloud Service Provider handles support and upgrades. Services are paid for on a subscription basis, eliminating the need for substantial capital investments and freeing up your internal IT resources.

As a result, your company has more flexibility and can access programs and data quickly for testing purposes or as part of a recovery plan. However, it implies you have little control over the system’s update schedule and content.

Read also: 8 Top Benefits of Public Cloud Every Tester Should Know.

What Is A Private Cloud?

Private cloud refers to computing where the service provider does not publish all resources online. Only connections via private networks are supported.

It has a single-occupant architecture and only authentic users. Applications like Google Drive, Google Docs, YouTube, etc., are run on a private cloud, which means that the back-end data is not accessible to the general public.

The hardware and software are only dedicated to a private corporation, i.e., members of the special entity. The infrastructure and services are maintained and deployed across a private network.

Due to its excellent adaptability and flexibility, it is suitable for businesses that want an infrastructure with high performance, high security, and privacy.

Your data will be hosted on a dedicated server with access and control restricted to your company exclusively using a private cloud solution. Due to its single usage, the network provides high performance and is secured by a reliable firewall.

Customers can alter how their service is controlled and maintained. This implies that you can modify your infrastructure to meet your company’s needs and any specific infrastructure or security requirements you may have.

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Difference Between Public and Private Cloud

Differences between public vs private cloud are as under:

Parameters Public Cloud Private Cloud
Service ProviderIn the public cloud, internet-based cloud computing service providers make their infrastructure available to the general public. It supports numerous clients or businesses.Whereas in a private cloud, service providers exchange infrastructure for cloud computing over the internet with private businesses. It aids a single business.
StorageIn the public cloud, data from multiple businesses are stored in a single, shared environment under a multi-tenancy model. Sharing of data is governed by security, permission, and rules.Whereas in a private cloud, Data from a single enterprise is stored under a single tenancy.
VersatileIn the public cloud, as the user base is global, cloud service providers offer any hardware and services imaginable. Services and equipment may be required differently by various people and organizations. The services offered must be adaptable.In a private cloud, Data from a single enterprise is stored under a single tenancy.
ScalabilityIn the public cloud, reliability is average, and scalability is quite high. But, in a private cloud, reliability is extremely good, but scalability is constrained.
CostPublic cloud is an affordable choice with pay-as-you-go service charges.OpEx: Pay-as-you-go; scale up or down as necessary; billed by the minute.Whereas in a private cloud, the operating costs, software, and gear will come at a high upfront capital investment. Costs for ongoing expenses must also account for maintenance and growth. 
PerformancesIn the public cloud, performance levels may decline due to competing users.Whereas in a private cloud, exceptional performance comes from a dedicated server.
SecurityIn the public cloud, there is a basic observance of security. Some might provide bolt-on security features.Whereas in a private cloud, the network environment is in isolation. Improved security to comply with data protection laws.
Support And MaintenanceThe public cloud service provider has a technical team.A private cloud has a technical administrator.
ExamplesIn the public cloud, Amazon Web Service (AWS) and Google AppEngine are two examples.And in a private cloud, HP, Red Hat, VMware, Microsoft KVM, and others are a few examples.
ModelA cloud deployment approach called public cloud is based on a cloud provider who typically provides pre-configured and published solutions. It is a cloud infrastructure where several users can share computing resources.A private cloud is a dedicated cloud infrastructure set aside and managed for only one person or group of people. The service management in a private cloud infrastructure is under the hands of you or a reliable partner.
CustomizationSince public cloud resources can be shared among many users and are geographically spread, any over-provisioned resources are effectively utilized. As a result, even if a data center experiences an outage, a user’s cloud service is unaffected. However, leveraging the public cloud can be challenging for some specific requirements of larger enterprises, such as adaptations in procurement, security, and governance procedures.Private cloud models give the power to tailor the cloud service to meet client needs completely.

End-to-End Testing on Real iOS, Android Devices & Browsers with TestGrid Public Cloud

TestGrid Cloud Cross Browser Testing

TestGrid public cloud offers a combination of real devices & browsers to help users test your mobile app and website on the cloud while getting 100% real user experience.

The following activities are possible with TestGrid Public Cloud:

1. Cross-Browser Testing

Users can test their websites on actual cloud devices using a variety of desktop and mobile browsers or OS combinations to give their customers the best UI/UX.

2. Mobile Device Testing

To boost sales, create a cutting-edge mobile app for your users and test it on tens of thousands of devices connected to carrier networks.

3. API Testing

TestGrid API testing is a web-based API development suite that is 70% faster than traditional API automation and has a straightforward user interface.

Simulators should only be used for quick debugging, and both Apple and Google recommend testing on actual devices. As a result, programmers must ensure that their applications are tested on real iOS and Android devices.

Because of constant device upgrades, endless iOS and Android versions, and form factors, this task is difficult in a fragmented market. As a result, gathering the necessary tools is impossible. Instead, use the device lab on

Our lab is constantly expanding with over 100 iOS and Android devices in all popular form factors.

Read also: Public vs Private vs Hybrid Cloud: Which One Should You Use?


In summary, larger companies and governmental organizations like the adaptability and scalability of public cloud services, but specific needs always force them to consider private cloud services. Only private clouds can tailor the cloud service to a client’s needs completely. 

Conversely, because resources are shared among many users in a public cloud architecture, elasticity and on-demand scaling are considerably easier to supply. Additionally, rather than offering cloud services to the general public, a private cloud aims to give consumers access to a flexible and agile private infrastructure.

Whatever cloud solution you decide on, it’s critical that you thoroughly investigate your options to make sure you select the one that will best serve your varying workload requirements. Think carefully about the variations and keep in mind that a hybrid solution can offer both advantages.