# What is IBM z architecture?

What is IBM z architecture?

##### Post Metadata
- Posted at: almost 4 years ago
- Author title: Pinned by G2 as a common question



## Comments
### Comment 1

z/Architecture, initially and briefly called ESA Modal Extensions (ESAME), is IBM's 64-bit complex instruction set computer (CISC) instruction set architecture, implemented by its mainframe computers. IBM introduced its first z/Architecture-based system, the z900, in late 2000.
For more info: https://en.m.wikipedia.org/wiki/Z/Architecture#:~:text=z%2FArchitecture%2C%20initially%20and%20briefly,the%20z900%2C%20in%20late%202000.

##### Comment Metadata
- Posted at: almost 4 years ago
- Author title: Head Of IT Department at Palestinian National Economic Empowerment Institution/ PNEEI




## Related Product
[IBM Z](https://www.g2.com/products/ibm-z/reviews)

## Related Category
[Servers](https://www.g2.com/categories/servers)

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