diff --git a/envs/os_compatability/README.md b/envs/os_compatibility/README.md
similarity index 66%
rename from envs/os_compatability/README.md
rename to envs/os_compatibility/README.md
index efeb04319..9dd136ae7 100644
--- a/envs/os_compatability/README.md
+++ b/envs/os_compatibility/README.md
@@ -26,3 +26,10 @@ Launch the environment by going into `terraform` folder and running
 terraform init
 terraform apply
 ```
+
+## Usage
+1. Launch os_compat_ISLAND machine and upload your binaries/update island
+2. Launch/Reboot all other os_compat test machines
+3. Wait until machines boot and run monkey
+4. Launch `test_compatibility.py` pytest script with island ip parameter 
+(e.g. `test_compatibility.py --island 111.111.111.111:5000`)
diff --git a/envs/os_compatability/aws_keys/.gitignore b/envs/os_compatibility/aws_keys/.gitignore
similarity index 100%
rename from envs/os_compatability/aws_keys/.gitignore
rename to envs/os_compatibility/aws_keys/.gitignore
diff --git a/envs/os_compatibility/conftest.py b/envs/os_compatibility/conftest.py
new file mode 100644
index 000000000..13aabf5b6
--- /dev/null
+++ b/envs/os_compatibility/conftest.py
@@ -0,0 +1,11 @@
+import pytest
+
+
+def pytest_addoption(parser):
+    parser.addoption("--island", action="store", default="",
+                     help="Specify the Monkey Island address (host+port).")
+
+
+@pytest.fixture(scope='module')
+def island(request):
+    return request.config.getoption("--island")
diff --git a/envs/os_compatability/terraform/config.tf b/envs/os_compatibility/terraform/config.tf
similarity index 100%
rename from envs/os_compatability/terraform/config.tf
rename to envs/os_compatibility/terraform/config.tf
diff --git a/envs/os_compatability/terraform/infra.tf b/envs/os_compatibility/terraform/infra.tf
similarity index 100%
rename from envs/os_compatability/terraform/infra.tf
rename to envs/os_compatibility/terraform/infra.tf
diff --git a/envs/os_compatability/terraform/instance_template/main.tf b/envs/os_compatibility/terraform/instance_template/main.tf
similarity index 100%
rename from envs/os_compatability/terraform/instance_template/main.tf
rename to envs/os_compatibility/terraform/instance_template/main.tf
diff --git a/envs/os_compatability/terraform/instance_template/variables.tf b/envs/os_compatibility/terraform/instance_template/variables.tf
similarity index 100%
rename from envs/os_compatability/terraform/instance_template/variables.tf
rename to envs/os_compatibility/terraform/instance_template/variables.tf
diff --git a/envs/os_compatability/terraform/instances.tf b/envs/os_compatibility/terraform/instances.tf
similarity index 98%
rename from envs/os_compatability/terraform/instances.tf
rename to envs/os_compatibility/terraform/instances.tf
index 7a3cd9285..3f5cc8658 100644
--- a/envs/os_compatability/terraform/instances.tf
+++ b/envs/os_compatibility/terraform/instances.tf
@@ -1,3 +1,7 @@
+// Instances of machines in os_compat environment
+// !!! Don't forget to add machines to test_compatibility.py if you add here !!!
+
+
 resource "aws_instance" "island" {
   ami           = "ami-01cc9554aa0b4c00e"
   instance_type = "t2.micro"
diff --git a/envs/os_compatibility/test_compatibility.py b/envs/os_compatibility/test_compatibility.py
new file mode 100644
index 000000000..da46bc71c
--- /dev/null
+++ b/envs/os_compatibility/test_compatibility.py
@@ -0,0 +1,64 @@
+import pytest
+
+from envs.monkey_zoo.blackbox.island_client.monkey_island_client import MonkeyIslandClient
+
+
+machine_list = {
+    "10.0.0.36": "centos_6",
+    "10.0.0.37": "centos_7",
+    "10.0.0.38": "centos_8",
+    "10.0.0.42": "suse_12",
+    "10.0.0.41": "suse_11",
+    "10.0.0.99": "kali_2019",
+    "10.0.0.86": "rhel_6",
+    "10.0.0.87": "rhel_7",
+    "10.0.0.88": "rhel_8",
+    "10.0.0.77": "debian_7",
+    "10.0.0.78": "debian_8",
+    "10.0.0.79": "debian_9",
+    "10.0.0.66": "oracle_6",
+    "10.0.0.67": "oracle_7",
+    "10.0.0.22": "ubuntu_12",
+    "10.0.0.23": "ubuntu_12_32",
+    "10.0.0.24": "ubuntu_14",
+    "10.0.0.29": "ubuntu_19",
+    "10.0.0.4": "windows_2003_r2_32",
+    "10.0.0.5": "windows_2003",
+    "10.0.0.8": "windows_2008",
+    "10.0.0.6": "windows_2008_32",
+    "10.0.0.7": "windows_2008_r2",
+    "10.0.0.12": "windows_2012",
+    "10.0.0.11": "windows_2012_r2",
+    "10.0.0.16": "windows_2016",
+    "10.0.0.19": "windows_2019",
+}
+
+
+@pytest.fixture(scope='class')
+def island_client(island):
+    island_client_object = MonkeyIslandClient(island)
+    yield island_client_object
+
+
+@pytest.mark.usefixtures('island_client')
+# noinspection PyUnresolvedReferences
+class TestOSCompatibility(object):
+
+    def test_os_compat(self, island_client):
+        print()
+        all_monkeys = island_client.get_all_monkeys_from_db()
+        ips_that_communicated = []
+        for monkey in all_monkeys:
+            for ip in monkey['ip_addresses']:
+                if ip in machine_list:
+                    ips_that_communicated.append(ip)
+                    break
+        for ip, os in machine_list.items():
+            if ip not in ips_that_communicated:
+                print("{} didn't communicate to island".format(os))
+
+        if len(ips_that_communicated) < len(machine_list):
+            assert False
+
+
+