cloud computing services
What is cloud computing ? Cloud computing or cloud computing services is the delivery of computing services (servers, storage, databases, networking, software, analytics, intelligence) over Internet (“the cloud”) to offer faster innovation, flexible resources and economies of scale. You typically pay only for cloud services you use, helping lower your operating costs, run your infrastructure more efficiently and scale as your business needs change.
advantages and disadvantages of cloud computing
Lets discuss about what are advantages of cloud computing :
Cost : Eliminates Capital expense of buying hardware and software and setting up and running on-site data centers—the racks of servers, the round-the-clock electricity for power and cooling, the IT experts for managing the infrastructure.
Speed : Computing services are provided self service and on demand, so even vast amounts of computing resources can be provisioned in minutes, providing businesses a lot of flexibility and taking the pressure off capacity planning.
Global Scale : Another benefits include ability to scale elastically means delivering right amount of IT resources (computing power, storage, bandwidth) during need and from the right geographic location.
Productivity : Eliminates many tasks like “racking and stacking”—hardware set up, software patching and other time-consuming IT management chores, which leads IT teams to spend time on achieving more important business goals.
Performance : Cloud computing services run on a worldwide network of secure data centers, which are regularly upgraded to the latest generation of fast and efficient computing hardware. This add several benefits over a single corporate data center, including reduced network latency for applications and greater economies of scale.
Security : Many cloud providers offer a broad set of policies, technologies and controls that strengthen your security posture overall, helping protect your data, apps and infrastructure from potential threats.
disadvantages of cloud computing includes as below
Vendor Lock-In : Vendor lock-in is a disadvantage of cloud computing. Differences between vendor platforms may create difficulties in migrating from one cloud platform to another, which could equate to additional costs and configuration complexities. Gaps or compromises made during a migration could also expose your data to additional security and privacy vulnerabilities.
Types of cloud computing
Not all clouds are the same and not one type of cloud computing is right for everyone. Several different models, types and services have evolved to help offer the right solution for your needs. There are 3 types of cloud computing deployments: public, private and hybrid. First, you need to determine the type of cloud deployment or cloud computing architecture, that your cloud services will be implemented on. There are three different ways to deploy cloud services: on a public cloud, private cloud or hybrid cloud.
services of cloud computing
services of cloud computing fall into four broad categories: infrastructure as a service (IaaS), platform as a service (PaaS), serverless and software as a service (SaaS). We can say these as cloud computing stack because they build on top of one another.
Infrastructure as a service (IaaS) : The most basic category of cloud computing services. With IaaS, you rent IT infrastructure—servers and virtual machines (VMs), storage, networks, operating systems—from a cloud provider on a pay-as-you-go basis. To learn more, see What is IaaS?
Platform as a service (PaaS) : Platform as a service refers to cloud computing services that supply an on-demand environment for developing, testing, delivering and managing software applications. PaaS is designed to make it easier for developers to quickly create web or mobile apps, without worrying about setting up or managing the underlying infrastructure of servers, storage, network and databases needed for development. To learn more, see What is PaaS?
Serverless computing : Overlapping with PaaS, serverless computing focuses on building app functionality without spending time continually managing the servers and infrastructure required to do so. The cloud provider handles the setup, capacity planning and server management for you. Serverless architectures are highly scalable and event-driven, only using resources when a specific function or trigger occurs.
Software as a service (SaaS) : Software as a service is a method for delivering software applications over the Internet, on demand and typically on a subscription basis. With SaaS, cloud providers host and manage the software application and underlying infrastructure and handle any maintenance, like software upgrades and security patching. Users connect to the application over the Internet, usually with a web browser on their phone, tablet or PC. To learn more, see What is SaaS?
How cloud computing works
While cloud computing services all work a little differently, many provide a friendly, browser-based dashboard that makes it easier for IT professionals and developers to order resources and manage their accounts. Some cloud computing services are also designed to work with REST APIs and a command-line interface, giving developers multiple options.
use of cloud computing in business
we use an online service to send email, edit documents, watch movies or TV, listen to music, play games or store pictures and other files and cloud computing is used behind the scenes.
below are examples of what is possible today with cloud services from a cloud provider.
Create new apps and services : Quickly build, deploy and scale applications (web, mobile and API) on any platform. Access resources you need to help meet performance, security and compliance requirements.
Test and build applications : Reduce application development cost and time by using cloud infrastructures that can easily be scaled up or down.
Store, back up and recover data : Protect your data more cost-efficiently and at massive scale by transferring data over Internet to an offsite cloud storage system that is accessible from any location and any device.
Analyse data : Unify your data across teams, divisions and locations in the cloud. Then use cloud services, such as machine learning and artificial intelligence, to uncover insights for more informed decisions.
Stream audio and video : Connect with your audience anywhere, anytime, on any device with high-definition video and audio with global distribution.
Embed intelligence : Use intelligent models to help engage customers and provide valuable insights from the data captured.
Deliver software on demand : Also known as software as a service (SaaS), on-demand software lets you offer the latest software versions and updates around to customers at anytime they need, anywhere they are.
characteristics of cloud computing
Critical characteristics that must be present to be a cloud. This applies to both private clouds and public clouds.
On-Demand Self-Service The ability to provision services, such as a virtual machine, as needed without human interaction must be provided. Some organizations may add approval workflow for certain conditions.
Broad Network Access Access to services over many types of networks, mobile phones, desktops, and so on must be provided.
Resource Pooling Resources are organized in a multi tenant model with isolation provided via software. This removes the islands of resources that are common when each business group has its own resources. Resource islands lead to inefficiency in utilization.
Rapid Elasticity Rapid elasticity is the ability to scale rapidly outward and inward as demands on services change. The ability to achieve large-scale elasticity is tied to pooling all resources together to achieve a larger potential pool.
Measured Service Clouds provide resources based on defined quotas, but they also enable reporting based on usage and potentially even billing.