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Layer and Tier

 
Shaik.Nazeer Ahmed
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what is difference between Layer and Tier ?
 
Deepak Rao
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Kind of similar, Tier is a physical demarcation and Layer is a logical one.

The concepts of layer and tier are often used interchangeably. However, one fairly common point of view is that there is indeed a difference, and that a layer is a logical structuring mechanism for the elements that make up the software solution, while a tier is a physical structuring mechanism for the system infrastructure

-wikipedia


Thanks
Deepak
 
Campbell Ritchie
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And welcome to the Ranch
 
Kiran Yadav
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Yes, layer and tier are often used interchangeably, however in bussiness language perspective tier indicates the layered structure.
 
It is sorta covered in the JavaRanch Style Guide.
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