diff --git a/compos/composd/src/composd_main.rs b/compos/composd/src/composd_main.rs
new file mode 100644
index 0000000..f674448
--- /dev/null
+++ b/compos/composd/src/composd_main.rs
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//! Exposes an on-demand binder service to perform system compilation tasks using CompOS. It is
+//! responsible for managing the lifecycle of the CompOS VM instances, providing key management for
+//! them, and orchestrating trusted compilation.
+
+mod service;
+
+use android_system_composd::binder::{register_lazy_service, ProcessState};
+use anyhow::{Context, Result};
+use log::{error, info};
+
+fn try_main() -> Result<()> {
+    android_logger::init_once(
+        android_logger::Config::default().with_tag("composd").with_min_level(log::Level::Info),
+    );
+
+    let service = service::new_binder();
+    register_lazy_service("android.system.composd", service.as_binder())
+        .context("Registering service")?;
+
+    info!("Registered service, joining threadpool");
+    ProcessState::join_thread_pool();
+
+    info!("Exiting");
+    Ok(())
+}
+
+fn main() {
+    if let Err(e) = try_main() {
+        error!("{}", e);
+        std::process::exit(1)
+    }
+}
diff --git a/compos/composd/src/service.rs b/compos/composd/src/service.rs
new file mode 100644
index 0000000..8fe28ec
--- /dev/null
+++ b/compos/composd/src/service.rs
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//! Implementation of IIsolatedCompilationService, called from system server when compilation is
+//! desired.
+
+use android_system_composd::aidl::android::system::composd::IIsolatedCompilationService::{
+    BnIsolatedCompilationService, IIsolatedCompilationService,
+};
+use android_system_composd::binder::{self, BinderFeatures, Interface, Strong};
+
+pub struct IsolatedCompilationService {}
+
+pub fn new_binder() -> Strong<dyn IIsolatedCompilationService> {
+    let service = IsolatedCompilationService {};
+    BnIsolatedCompilationService::new_binder(service, BinderFeatures::default())
+}
+
+impl IsolatedCompilationService {}
+
+impl Interface for IsolatedCompilationService {}
+
+impl IIsolatedCompilationService for IsolatedCompilationService {
+    fn doSomething(&self) -> binder::Result<()> {
+        Ok(())
+    }
+}