Important Concept In Cloud Computing.

What is Cloud Computing

Cloud computing is providing computing services which include servers, storage, software, networking over the internet to provide faster innovation and flexible resources.
Instead of storing files on a storage device or hard drive, a user can save them on the cloud making it possible to access the files from anywhere as long as there is access to the internet.

Models of Cloud Computing

• Public cloud: this cloud computing is open to the general public and is owned by a third party provider.

• Private cloud: this cloud computing is provisioned and managed within an organizations premises.

• Hybrid cloud:this cloud computing combines public and private cloud services which allows data and application to be shared between them.

What is virtualization

Virtualization in cloud computing is a technology that allows multiple virtual machines (VMs) to run on a single physical machine or host by simulating hardware components like processors, memory and storage.

Types of Virtualization

• Server Virtualization: this is also known as hardware virtualization and is most common type of virtualization in cloud computing. It can also partition physical server into multiple virtual machines.
• Desktop virtualization: it allows users simulate a workstaion load to access a desktop from a connected device.
• Network virtualization: can be assigned to a specific device or server and can also combine network resources into separate channels.

What is scalability

Scalability in cloud computing is the ability of a cloud system to increase or decrease its resources and capacity to match changing business needs. Cloud scalability can either be flexible (it allows users to quickly add or remove resources as needed, providing adaptability to fluctuating workloads) or cost efficiency (it help optimize costs by only paying for the resource actually used).

What is Agility

Agility in cloud computing is the ability of an organization to quickly respond to changing business needs, opportunities by rapidly deploying, scaling and managing cloud based resources and applications. It also means being able to respond fast to new challenges through the use of cloud technology.

Services that Enables Agility

• Infrastructure as a service(IaaS) provides scalable infrastructure resources such as servers, storage, and networking.
• Platform as a Service(PaaS) offers scalable platform for developing, running and managing applications.
• Software as a Service(SaaS) provides scalable software applications with automatic updates and maintenance.

What is High Availability

High availability in cloud computing refers to the ability of a cloud system to ensure that applications, services and data are accessible and usable at all times with minimal downtime or disruption. It aims to maintain a high level of uptime by distributing resources across multiple locations and automatically switching to backups in case of failures.

Benefits of High Availability in Cloud Computing

• Improves user experience: users can access applications and services at all times with minimal disruption.
• Increase productivity: businesses and companies can maintain operations and productivity even in the event of hardware or software failures.
• Enhanced reputation: high availability demonstrates a commitment to reliability and customer satisfaction.

What is Fault Tolerant

Fault tolerance in cloud computing is the ability of a cloud system to detect, recover from and continue operating despite hardware or software failures or disruption. Essentially the system can withstand failures and keep running smoothly.
High availability, reduce downtime, improve reliability and increase customer satisfaction are all benefits of fault tolerance in cloud computing.

What is Global Reach

Global reach in cloud computing refers to the ability of a cloud provider to deliver cloud services and applications to users anywhere in the world regardless of geographical location. Essentially, it means a cloud service can be accessed from anywhere with an internet connection.

Key Characteristics of Global Reach in Cloud Computing

• Worldwide availability: cloud service are available to users in multiple regions and countries.
• High availability: cloud services are designed to be always on with minimal downtime or disruption.
• Scalability: cloud services can scale to meet the needs of a global user base.
• Low latency: cloud services are delivered with minimal delay ensuring fast and responsive performance.

What is the Difference Between Elasticity and Scalability

In cloud computing, elasticity means the ability of a cloud system to automatically adjust its resources to match changing workload demands without manual intervention while scalability means the capacity to increase or decrease resources (e.g, computer power, storage or networking) to match changing workload demands.