Skip to main content

Cloud Computing


Cloud computing is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet.Users need not have knowledge of, expertise in, or control over the technology infrastructure in the "cloud" that supports them.

The concept generally incorporates combinations of the following:

* infrastructure as a service (IaaS)
* platform as a service (PaaS)
* software as a service (SaaS)
* Other recent (ca. 2007–2009) technologies that rely on the Internet to satisfy the computing needs of users. Cloud computing services often provide common business applications online that are accessed from a web browser, while the software and data are stored on the servers.

The term cloud is used as a metaphor for the Internet, based on how the Internet is depicted in computer network diagrams and is an abstraction for the complex infrastructure it conceals.

The first academic use of this term appears to be by Prof. Ramnath K. Chellappa (currently at Goizueta Business School, Emory University) who originally defined it as a computing paradigm where the boundaries of computing will be determined by economic rationale rather than technical limits.

Comments

Popular posts from this blog

Standard and Formatted Input / Output in C++

The C++ standard libraries provide an extensive set of input/output capabilities which we will see in subsequent chapters. This chapter will discuss very basic and most common I/O operations required for C++ programming. C++ I/O occurs in streams, which are sequences of bytes. If bytes flow from a device like a keyboard, a disk drive, or a network connection etc. to main memory, this is called   input operation   and if bytes flow from main memory to a device like a display screen, a printer, a disk drive, or a network connection, etc., this is called   output operation . Standard Input and Output in C++ is done through the use of  streams . Streams are generic places to send or receive data. In C++, I/O is done through classes and objects defined in the header file  <iostream> .  iostream  stands for standard input-output stream. This header file contains definitions to objects like  cin ,  cout , etc. /O Library Header Files There are...

locking

DBMS Locking Part I (DBMS only) TECHNICAL ARTICLES -> PERFORMANCE ARTICLES [  Back  ] [  Next  ] DBMS is often criticized for excessive locking – resulting in poor database performance when sharing data among multiple concurrent processes. Is this criticism justified, or is DBMS being unfairly blamed for application design and implementation shortfalls? To evaluate this question, we need to understand more about DBMS locking protocols. In this article, we examine how, why, what and when DBMS locks and unlocks database resources. Future articles will address how to minimize the impact of database locking. THE NEED FOR LOCKING In an ideal concurrent environment, many processes can simultaneously access data in a DBMS database, each having the appearance that they have exclusive access to the database. In practice, this environment is closely approximated by careful use of locking protocols. Locking is necessary in a concurrent environment to as...

Difference between net platform and dot net framework...

Difference between net platform and dot net framework... .net platform supports programming languages that are .net compatible. It is the platform using which we can build and develop the applications. .net framework is the engine inside the .net platform which actually compiles and produces the executable code. .net framework contains CLR(Common Language Runtime) and FCL(Framework Class Library) using which it produces the platform independent codes. What is the .NET Framework? The Microsoft .NET Framework is a platform for building, deploying, and running Web Services and applications. It provides a highly productive, standards-based, multi-language environment for integrating existing investments with next-generation applications and services as well as the agility to solve the challenges of deployment and operation of Internet-scale applications. The .NET Framework consists of three main parts: the common language runtime, a hierarchical set of unified class librari...