diff --git a/config/.gitkeep b/config/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/py_dvt_ate/__init__.py b/src/py_dvt_ate/__init__.py
new file mode 100644
index 0000000..98adb21
--- /dev/null
+++ b/src/py_dvt_ate/__init__.py
@@ -0,0 +1,3 @@
+"""py_dvt_ate: Coupled Physics DVT Simulation Platform."""
+
+__version__ = "0.0.1"
diff --git a/src/py_dvt_ate/cli/__init__.py b/src/py_dvt_ate/cli/__init__.py
new file mode 100644
index 0000000..429eb26
--- /dev/null
+++ b/src/py_dvt_ate/cli/__init__.py
@@ -0,0 +1 @@
+"""Command-line interface."""
diff --git a/src/py_dvt_ate/config/__init__.py b/src/py_dvt_ate/config/__init__.py
new file mode 100644
index 0000000..da7746f
--- /dev/null
+++ b/src/py_dvt_ate/config/__init__.py
@@ -0,0 +1 @@
+"""Configuration handling."""
diff --git a/src/py_dvt_ate/dashboard/__init__.py b/src/py_dvt_ate/dashboard/__init__.py
new file mode 100644
index 0000000..92d819f
--- /dev/null
+++ b/src/py_dvt_ate/dashboard/__init__.py
@@ -0,0 +1 @@
+"""Streamlit dashboard."""
diff --git a/src/py_dvt_ate/drivers/__init__.py b/src/py_dvt_ate/drivers/__init__.py
new file mode 100644
index 0000000..c1a69ab
--- /dev/null
+++ b/src/py_dvt_ate/drivers/__init__.py
@@ -0,0 +1 @@
+"""Instrument SCPI drivers."""
diff --git a/src/py_dvt_ate/executive/__init__.py b/src/py_dvt_ate/executive/__init__.py
new file mode 100644
index 0000000..0b6b2cb
--- /dev/null
+++ b/src/py_dvt_ate/executive/__init__.py
@@ -0,0 +1 @@
+"""Test execution framework."""
diff --git a/src/py_dvt_ate/hal/__init__.py b/src/py_dvt_ate/hal/__init__.py
new file mode 100644
index 0000000..c60f8ce
--- /dev/null
+++ b/src/py_dvt_ate/hal/__init__.py
@@ -0,0 +1 @@
+"""Hardware Abstraction Layer."""
diff --git a/src/py_dvt_ate/hal/impl/__init__.py b/src/py_dvt_ate/hal/impl/__init__.py
new file mode 100644
index 0000000..b428c1e
--- /dev/null
+++ b/src/py_dvt_ate/hal/impl/__init__.py
@@ -0,0 +1 @@
+"""HAL implementations."""
diff --git a/src/py_dvt_ate/instruments/__init__.py b/src/py_dvt_ate/instruments/__init__.py
new file mode 100644
index 0000000..e769979
--- /dev/null
+++ b/src/py_dvt_ate/instruments/__init__.py
@@ -0,0 +1 @@
+"""Virtual instrument implementations."""
diff --git a/src/py_dvt_ate/physics/__init__.py b/src/py_dvt_ate/physics/__init__.py
new file mode 100644
index 0000000..4c18295
--- /dev/null
+++ b/src/py_dvt_ate/physics/__init__.py
@@ -0,0 +1 @@
+"""Physics simulation engine."""
diff --git a/src/py_dvt_ate/physics/dut/__init__.py b/src/py_dvt_ate/physics/dut/__init__.py
new file mode 100644
index 0000000..d622472
--- /dev/null
+++ b/src/py_dvt_ate/physics/dut/__init__.py
@@ -0,0 +1 @@
+"""Device Under Test models."""
diff --git a/src/py_dvt_ate/py.typed b/src/py_dvt_ate/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/src/py_dvt_ate/server/__init__.py b/src/py_dvt_ate/server/__init__.py
new file mode 100644
index 0000000..86403c9
--- /dev/null
+++ b/src/py_dvt_ate/server/__init__.py
@@ -0,0 +1 @@
+"""Simulation server."""
diff --git a/src/py_dvt_ate/tests/__init__.py b/src/py_dvt_ate/tests/__init__.py
new file mode 100644
index 0000000..d8b71b2
--- /dev/null
+++ b/src/py_dvt_ate/tests/__init__.py
@@ -0,0 +1 @@
+"""DVT test implementations."""
diff --git a/src/py_dvt_ate/transport/__init__.py b/src/py_dvt_ate/transport/__init__.py
new file mode 100644
index 0000000..c1c5b60
--- /dev/null
+++ b/src/py_dvt_ate/transport/__init__.py
@@ -0,0 +1 @@
+"""Communication layer."""
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..48890ea
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1 @@
+"""pytest fixtures for py_dvt_ate tests."""
diff --git a/tests/integration/.gitkeep b/tests/integration/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/tests/unit/.gitkeep b/tests/unit/.gitkeep
new file mode 100644
index 0000000..e69de29