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collections/technology/zos/benefits/deterministic_deployment.md

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+    
+## Deterministic Deployment
+
+![](img/smartcontract_deploy.png)  
+    
+The Dedupe filesystem flist uses an interface which allows you to create the file system interface in user space, it is a virtual filesystem. 
+
+Metadata is exposed. The system sees the full tree of the image, but data itself is not there, data is downloaded whenever they are accessed and fully deduped (unique data).
+     
+>TODO: improve
+
+### Benefits
+
+  - Smart contract for IT
+    The smart contract for IT concept is applicable to any workload: containers, VMs, all gateways primitives, volumes, kubernetes and network.
+    It is a static agreement between farmer and user about deployment of an IT workload 
+  - no dynamic behavior for deployment at runtime
+  - no process can start unless the files are 100% described on flist level
+    
+
+
+
+
+### There are multiple ways to create an flist: 
+
+   - Convert an existing docker image which is hosted on the docker hub
+   - Push an archive like a tgz on the hub
+   - A library and CLI tool exist to build the flist from scratch: doing it this way, the directory is locally populated, and the flist is then created from the CLI tool 
+   - A [GitHub action](https://github.com/threefoldtech/publish-flist) allows to build a flist directly from GitHub action, useful for developers on GitHub 
+