Cloud Computing is a collection of IT resources, such as computing resources (servers), disk space (data warehouses), network equipment, communication channels, software (operating systems, databases, application applications).
Cloud Software Models:
IaaS (Infrastructure as a Service) – cloud platforms on which it is possible to rent a naked Windows / Linux server with scalable capacity.
PaaS (Platform as a Service) – cloud platforms with all necessary intermediate and auxiliary software (DBMS, framework, services).
SaaS (Software as a Service) – business applications supplied as Internet services.
Top Open Source Cloud Computing Software:
OpenStack Open Source Cloud Computing Software. OpenStack software controls large pools of compute, storage, and networking resources throughout a datacenter, managed through a dashboard or via the OpenStack API.
Apache CloudStack: Open Source Cloud Computing. CloudStack is open source cloud computing software for creating, managing, and deploying infrastructure cloud services.
OpenNebula – Flexible Enterprise Cloud Made Simple. Enterprise cloud computing is the next step in the evolution of data center virtualization. OpenNebula combines existing virtualization technologies with advanced features for multi-tenancy, automatic provision and elasticity, following a bottom-up approach driven by the real needs of sysadmins and devops.
Cloud Application Platform – Devops Platform | Cloud Foundry. Cloud Foundry is the industry standard cloud application platform that abstracts away infrastructure so you can focus on app innovation. Get started today!
Private Cloud made in Germany. openQRM Enterprise provides you with a complete Automated Workflow Engine for all your Bare-Metal and VM deployment AND all of your IT subsystems. Gain higher efficiency through management, automation and monitoring of your Datacenter & Cloud capacities.
FOSS-Cloud (FOSS-Cloud software and hardware) is an integrated and redundant server infrastructure to provide virtualization- and cloud-services, Windows or Linux based SaaS-, Terminal Server-, Virtual Desktop Infrastructure (VDI) or virtual server environments.