Why "Cloud" ?
Very often on diagrams, the Internet was symbolized by a nice cloud clipart. It was a convenient way to sum up the complexity of the worldwide network linking two or more LANs.
Humans (IT) and machines (IoT)
You, me, them, us : browsing the web, sending e-mails, video-conferencing, downloading, uploading... Good old IT.
Also known as the Internet of Things (IoT) : sensors, alarms, probes, detectors, devices, ... A galaxy of autonomous Cloud-enabled equipments running some form of synthesized intelligence.
1 Cloud, 3 categories
Provides servers, OSes, virtualization, network and storage.
Amazon Web Services, Microsoft Azure, AT&T, CenturyLink Technology Solutions, Cisco Systems, Cloudscaling, Comcast, EMC, GoGrid, Green Cloud Technologies, Hewlett-Packard, IBM, Joyent, NaviSite, Nebula, NTT Communications, Peak, ProfitBrick, Rackspace, Terremark.
Provides a computing platform and a solution stack as a service.
Apprenda, CloudBees, CumuLogic, Docker, Engine Yard, Eucalyptus Systems, GigaSpaces, Morphlabs, MuleSoft, Parallels, Piston Cloud Computing, Pivotal Software, Puppet Labs, Ravello Systems, Red Hat, RightScale, ScaleXtreme, Software AG, StackDriver, Xively.
Provides access to centrally hosted software.
Acumatica, Avalara, BetterCloud, Birst, Cloudability, FinancialForce, Google, Insightly, Intacct, Jaspersoft, Marketo, NetSuite, Oracle, Paxata, Salesforce.com, SAP, Star2Star Communications, Tableau Software, Workday, Zoho.
1 Cloud, 3 types
A Cloud infrastructure entirely dedicated to one company.
The services are rendered over a network that is open for public use.
A composition of two or more clouds (private or public) that remain distinct entities but are bound together.