Enterprise Application Servers
The terms SaaS and PaaS refer to service agreements for software which provides a white-label platform for your Internet services (Software as a service / Platform as a service).
In order to better optimize business applications, you go to the next outsourcing level and transfer such tasks as operation of the infrastructure servers which run your application, including operating systems configuration and services maintenance, to external organizations.
As a result, you will have application working 24/7 within the given parameters performance and RPC over HTTPs / IPSec / VPN technologies, secure access, and a reliable team of professionals to ensure a higher level of reliability pursuant to the SLA.
Resources expended by organization, including on server purchases, are likely to be significantly reduced, allowing your company to focus of core business goals and operations.
This is how the enterprise application server can and should look in a modern organization with a distributed structure::
SaaS / PaaS-services may also include a remote IP telephony server and outside IP-telephonystation.
All services are already installed and ready to go. Here, you can enjoy them for a very small fee.