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History of cloud computing
The concept of the cloud computing as a platform for distributed computing traces its roots back to 1993. At that time, Apple spin-off General Magic and AT&T utilized the term in the context of their Telescript and Personal Link technologies.
In an April 1994 feature by Wired, titled "Bill and Andy's Excellent Adventure II", Andy Hertzfeld elaborated on Telescript, General Magic's distributed programming language. He described the expansive potential of the cloud:
The beauty of Telescript ... is that now, instead of just having a device to program, we now have the entire Cloud out there, where a single program can go and travel to many different sources of information and create a sort of a virtual service. No one had conceived that before. The example Jim White [the designer of Telescript, X.400 and ASN.1] uses now is a date-arranging service where a software agent goes to the flower store and orders flowers and then goes to the ticket shop and gets the tickets for the show, and everything is communicated to both parties.
In 1963, the Defense Advanced Research Projects Agency (DARPA) funded Project MAC, the first computer time-sharing system. During the 1960s, the initial concepts of time-sharing became popularized via Remote Job Entry (RJE); this terminology was mostly associated with large vendors such as IBM and DEC.
Full-time-sharing solutions were available by the early 1970s on such platforms as Multics (on GE hardware), Cambridge CTSS, and the earliest UNIX ports (on DEC hardware). Yet, the "data center" model where users submitted jobs to operators to run on IBM mainframes was overwhelmingly predominant.
In the late 1980s, the invention of the world wide web led to internet expansion and on-premises data centers. In the 1990s, telecommunications companies, who previously offered primarily dedicated point-to-point data circuits, began offering virtual private network (VPN) services with comparable quality of service, but at a lower cost. By switching traffic as they saw fit to balance server use, they could use overall network bandwidth more effectively. They began to use the cloud symbol to denote the demarcation point between what the provider was responsible for and what users were responsible for. Cloud computing extended this boundary to cover all servers as well as the network infrastructure. As computers became more diffused, scientists and technologists explored ways to make large-scale computing power available to more users through time-sharing. They experimented with algorithms to optimize the infrastructure, platform, and applications, to prioritize tasks to be executed by CPUs, and to increase efficiency for end users. At the same time, Application Service Providers became popular, and later evolved into Software as a Service (SaaS). In 1999, Medidata launched Rave, the first electronic data capture software for clinical data.
The use of the cloud metaphor for virtualized services dates at least to General Magic in 1994, where it was used to describe the universe of "places" that mobile agents in the Telescript environment could go. As described by Andy Hertzfeld:
"The beauty of Telescript," says Andy, "is that now, instead of just having a device to program, we now have the entire Cloud out there, where a single program can go and travel to many different sources of information and create a sort of a virtual service."
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History of cloud computing
The concept of the cloud computing as a platform for distributed computing traces its roots back to 1993. At that time, Apple spin-off General Magic and AT&T utilized the term in the context of their Telescript and Personal Link technologies.
In an April 1994 feature by Wired, titled "Bill and Andy's Excellent Adventure II", Andy Hertzfeld elaborated on Telescript, General Magic's distributed programming language. He described the expansive potential of the cloud:
The beauty of Telescript ... is that now, instead of just having a device to program, we now have the entire Cloud out there, where a single program can go and travel to many different sources of information and create a sort of a virtual service. No one had conceived that before. The example Jim White [the designer of Telescript, X.400 and ASN.1] uses now is a date-arranging service where a software agent goes to the flower store and orders flowers and then goes to the ticket shop and gets the tickets for the show, and everything is communicated to both parties.
In 1963, the Defense Advanced Research Projects Agency (DARPA) funded Project MAC, the first computer time-sharing system. During the 1960s, the initial concepts of time-sharing became popularized via Remote Job Entry (RJE); this terminology was mostly associated with large vendors such as IBM and DEC.
Full-time-sharing solutions were available by the early 1970s on such platforms as Multics (on GE hardware), Cambridge CTSS, and the earliest UNIX ports (on DEC hardware). Yet, the "data center" model where users submitted jobs to operators to run on IBM mainframes was overwhelmingly predominant.
In the late 1980s, the invention of the world wide web led to internet expansion and on-premises data centers. In the 1990s, telecommunications companies, who previously offered primarily dedicated point-to-point data circuits, began offering virtual private network (VPN) services with comparable quality of service, but at a lower cost. By switching traffic as they saw fit to balance server use, they could use overall network bandwidth more effectively. They began to use the cloud symbol to denote the demarcation point between what the provider was responsible for and what users were responsible for. Cloud computing extended this boundary to cover all servers as well as the network infrastructure. As computers became more diffused, scientists and technologists explored ways to make large-scale computing power available to more users through time-sharing. They experimented with algorithms to optimize the infrastructure, platform, and applications, to prioritize tasks to be executed by CPUs, and to increase efficiency for end users. At the same time, Application Service Providers became popular, and later evolved into Software as a Service (SaaS). In 1999, Medidata launched Rave, the first electronic data capture software for clinical data.
The use of the cloud metaphor for virtualized services dates at least to General Magic in 1994, where it was used to describe the universe of "places" that mobile agents in the Telescript environment could go. As described by Andy Hertzfeld:
"The beauty of Telescript," says Andy, "is that now, instead of just having a device to program, we now have the entire Cloud out there, where a single program can go and travel to many different sources of information and create a sort of a virtual service."