It seems that technology advancements happen every single minute. And there are no limits for tech innovations. Cloud technologies are the greatest tech breakthrough occurred in the recent few years. More and more developers are wondering how to go about the business and achieve the best results.
The cloud computing has recently grown due to the recent advances in technology along with a demand for cost-efficient computing. Moreover, every developer understands that an application built specifically for the platform on which they will work, perform better and are more easier to manage and change.
Nowadays any developer is untouched by the cloud. Developers use one or the other form of a cloud-based service – whether it is the Amazon virtual machine for testing or hosting or a cloud-based development environment for writing codes.
In a nutshell, cloud development is everywhere. Let’s dive into specific and significant aspects of cloud computing.
What is cloud computing?
To put it simply, cloud computing is everything about the delivery of computing service over the Internet or “the cloud”. Cloud computing takes advantage of virtual resources. It means that a user gets access to any computing resource remotely through a particular client, in most cases, it’s a web browser.
The key advantage of cloud computing is agility. And from a customer perspective, cloud offers a way to get new tech capabilities on demand without investing in new software or hardware.
How does it work?
Three basic deployment models of cloud computing should be distinguished: public cloud, private cloud, and hybrid cloud.
A cloud provider creates a special place to host services and infrastructure, i.e., a public cloud. Clients can share and access the clouds via public networks such as the Internet. Public clouds are great solutions concerning scale and redundancy. But they are more vulnerable in comparison with public clouds as they possess higher levels of accessibility.
Private clouds use shared services and infrastructure that are stored and maintained on a private network. They can be accessed by only one client whether physically or virtually. The obvious benefit of a private cloud is its security, stability, and control. But it’s more costly option than public clouds as the enterprises will have to rent/purchase and support necessary software and hardware.
As its name implies, hybrid clouds combine the elements of public and private clouds. Hybrid clouds come useful when companies want to maximize the efficiency. Hybrid clouds suppose using public cloud services for non-sensitive operations and private ones for critical processes.
Cloud service models
To put it simply, cloud computing is everything about the delivery of computing service over the Internet or “the cloud”. Cloud computing takes advantage of virtual resources. It means that a user gets access to any computing resource remotely through a particular client, in most cases, it’s a web browser. The key advantage of cloud computing is agility. And from a customer perspective, cloud offers a way to get new tech capabilities on demand without investing in new software or hardware.
Infrastructure as a Service (IaaS)
IaaS delivers virtualized computing services to the end user across a network connection. Primary, IaaS deals with hardware or computing infrastructure. Infrastructure as a service is about virtualized server space, storage space, IP addresses, load balancers, and network connections.
As a rule, a user utilizes the resources on demand and pays per use. So if the user needs more cloud resources, a cloud provider can upgrade the hardware according to the business needs and vice versa. Amazon Web Services is an outstanding example of the IaaS platform.
- No upfront costs
- Infrastructure scales up on demand
- Innovative and flexible software solutions
Platform as a Service (PaaS)
PaaS is a cloud service model that provides tools to build software solutions. The model includes software and configurations (known as the solution stack) required to build a particular platform where developers can create their applications.
A close analogy would be to look at PaaS as an operating service and middleware of the cloud computing. The cloud providers of PaaS models deliver a fully-functioning computing platform including operating system, programming languages, database, and web server. App developers can build and run their solutions on a cloud platform.
Most of PaaS providers also enable on-demand scaling of the required resources automatically. Thus, a user doesn’t need to adjust the settings manually. The PaaS model also supports a multi-tenant app architecture so that multiple users can access the web application in a secure and scalable manner.
Some cloud providers have also embraced specialized app of PaaS as delivery data solution providers. They are dPaaS (Data Platform as a Service) and iPaaS (Integration Platform as a Service). dPaaS is a fully managed service where a dPaaS provider, not a developer, controls and oversees the development process by building custom data apps for customers. iPaaS allows the developers to build, execute, and control the integration flows.
To add more, PaaS models are getting more and more advanced splitting into more targeted models. For example, it was not long ago when the Blockchain as a Service (BaaS) emerged on the market. IBM Bluemix has already included BaaS services in the PaaS offerings.
- Develop apps faster
- Deploy fully-functioning web app to the clouds within minutes
- Use particular middleware
Software as a Service (SaaS)
SaaS models provide users with app software and databases. Cloud providers manage the platforms and infrastructure to ensure smooth and stable work of applications. You can access cloud providers software over a standard network connection. There is no need for installing additional tools and programs. Open a browser, type in the URL, and you are ready to use the app pointed to by the URL.
Everything that happens behind the scenes is hidden from users. Moreover, lots of people use SaaS services without realising it as many apps are delivered in this way.
A good way to understand what SaaS is to think of it as a bank that protects the privacy of users and provides reliable and secure services. From a technical perspective, SaaS has a multi-tenant architecture in which the users share a single infrastructure and code base. All users have the ability to customize the apps. Due to the specific way SaaS is architected. The customizations are unique to each user or company.
Google Gmail is probably the most known and most successful SaaS implementation.
- Just signup and start using innovative business apps
- Get access to the cloud from any connected computer
- No data loss
- The infrastructure can scale up according to user needs
Cloud Service Models
What you manage:
App and data
|App and data||–|
What the vendor takes care of:
|App and data|
What is cloud application development?
Cloud development is about the ability to create, build, and deploy your applications via a web browser. There is no need to install any additional software on your local hardware. To start developing in the cloud, you need a web browser, Internet connection, and the ability to code.
Let’s have a closer look at the Cloud9 IDE platform. It’s a web-based cloud software development environment where developers write, create, build, test, and deploy web apps from a browser. After the app is deployed, a developer can access it via the URL.
Another approach to cloud software development is building hybrid apps. Hybrid apps imply that a developer codes on a local machine, uses locally installed development tools, and after testing a developer deploys an app to the cloud. The PaaS platform builds a code with the supported build tools, and then the app is deployed to the appropriate server. Later, the app gets an URL for the developer to access a web app.
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