Answer Posted / s.m.feroz ahmed

Hi,
First of all your question is wrong.
Sap Architecture is defined in such a manner that If all 3
layers come in a single system then that system is called
as Single System Landscape.In this manner we have 3 system
landscape and 4 system landscape.

Single System LandScape is defined as when all the 3 layers
come in a single system as below :

1) Presentation Layer
2)Application Layer
3) Data Layer

If all the above 3 layers come in a single system then that
system is called as Single System LandScape.

If 2 layers come in one system and another layer comes in
another system then that system is called as 2 System
Landscape

for example :one system will contain Presentation as well
as Application layer and 2 system will contain only Data
layer .

If all the 3 layers come in 3 different systems then that
system is defined as 3 system landscape.

The 4th layer is defined as if SAPAS layer in which one
will find InternetLayer along with these 3 layers for
communication between different locations and this layer is
called as 4 system landscape.

The Scenario you have mentioned like 1 dev,2 quality and 2
production is a 3 system landscape and it is not 5 system
landscape.

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