Introduction to Cloud Computing

source image: google.com

Cloud computing is the “commercial availability of individual computing services delivers remotely”.The cloud computing services include

• Desktop
• Disk and storage
• Processing
• Networking
• Database etc...

Types of cloud computing

Cloud computing services can be categorized into three parts.

1. Software-as-a-Services(SaaS)
2. Platform-as-a-Services(Paas)
3. Infrastructure-as-a-Services(IaaS)

Software-as-a-Services(SaaS)-

It uses a complete application running on someone else’s system.

Ex:

1. Web-based email
2. Google documents

Platform-as-a-Services(Paas)-

It is developing applications using web-based tools so they run on systems software and hardware provided by another company.

Ex:

1. Shopping cart
2. Check out
3. Payment mechanism
4. App cloud(Google app engine)

Infrastructure-as-a-Services(IaaS) -

It means you’re buying access to raw computing hardware over the Net, such as services or storage

It includes:

• Outsourcing of Infrastructure
• Hosting services
• Database services
• Networking and storage services

Advantages and Disadvantages of cloud computing

Advantages :

• Easy implementation
• Accessibility
• No Hardware required
• Cost per head
• Efficient recovery

Disadvantages :

• No longer in control
• May not get all the features
• Doesn’t mean you should do away with services
• No Redundancy
• Bandwidth issues

Furthermore, readings

https://azure.microsoft.com/en-us/overview/what-is-cloud-computing/