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Technology
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Software-as-a-Service (SaaS) is a software distribution model in which the application and any related services are performed in a centralized environment and users access it via the network, almost always via the Internet and using a browser as an interface. It is the model that is typically indicated today with the expression "cloud services" and is the evolution of the ASP (Application Service Provider) model of the 1990s.
In the SaaS model, the reality that developed it is to provide the application and its services
the interface used is a browser
the architecture is multi-tenant, that is, there is only one application that serves multiple users keeping their respective data and operating environments separate.
The SaaS model is considered the winning one by all the main software vendors, who have created "as a Service" versions of their main applications and supply them through a proprietary cloud infrastructure created ad hoc or by relying on other cloud service providers.
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