diff --git a/docs.it4i/cloud/.gitkeep b/docs.it4i/cloud/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/docs.it4i/cloud/einfracz-cloud.md b/docs.it4i/cloud/einfracz-cloud.md
new file mode 100644
index 0000000000000000000000000000000000000000..d42f1398931e211bff80f1009a4d24e202e6657b
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+++ b/docs.it4i/cloud/einfracz-cloud.md
@@ -0,0 +1,23 @@
+# e-INFRA CZ Cloud Ostrava
+
+Ostrava cloud consists of 28 nodes from [Karolina][a] supercomputer.
+The cloud site is built on top of OpenStack,
+which is a free open standard cloud computing platform.
+
+For the list of deployed OpenStack services, see the [list of components][1].
+
+## Access
+
+To acces the cloud you must:
+
+* have an [e-Infra CZ account][3],
+* be a member of an [active project][b].
+
+More information can be found on the [e-INFRA CZ website][2].
+
+[1]: https://docs.e-infra.cz/compute/openstack/technical-reference/ostrava-site/openstack-components/
+[2]: https://docs.e-infra.cz/compute/openstack/technical-reference/ostrava-site/
+[3]: https://docs.e-infra.cz/account/
+
+[a]: ../karolina/introduction.md
+[b]: ../general/access/project-access.md
diff --git a/mkdocs.yml b/mkdocs.yml
index 4dabecae27021a28de17c0e54d1fb63c7b7b064b..befca4499ac19b27d9473f6c03135f792e403772 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -289,6 +289,9 @@ nav:
       - VirtualGL: software/viz/vgl.md
       - VESTA: software/viz/vesta.md
     - PBS Pro Documentation: pbspro.md
+  - Clouds:
+    - E-Infra CZ Cloud: einfra-cloud.md
+  #  - IT4I Cloud: it4i-cloud.md
 
 extra:
   disqus: 'test-3whnesz3gq'