diff --git a/virtmanager/src/aidl.rs b/virtmanager/src/aidl.rs
new file mode 100644
index 0000000..aecb4ce
--- /dev/null
+++ b/virtmanager/src/aidl.rs
@@ -0,0 +1,96 @@
+// Copyright 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 the AIDL interface of the Virt Manager.
+
+use crate::config::load_vm_config;
+use crate::crosvm::VmInstance;
+use crate::{Cid, FIRST_GUEST_CID};
+use android_system_virtmanager::aidl::android::system::virtmanager::IVirtManager::IVirtManager;
+use android_system_virtmanager::aidl::android::system::virtmanager::IVirtualMachine::{
+    BnVirtualMachine, IVirtualMachine,
+};
+use android_system_virtmanager::binder::{self, Interface, StatusCode, Strong};
+use log::error;
+use std::sync::{Arc, Mutex};
+
+pub const BINDER_SERVICE_IDENTIFIER: &str = "android.system.virtmanager";
+
+/// Implementation of `IVirtManager`, the entry point of the AIDL service.
+#[derive(Debug, Default)]
+pub struct VirtManager {
+    state: Arc<Mutex<State>>,
+}
+
+impl Interface for VirtManager {}
+
+impl IVirtManager for VirtManager {
+    /// Create and start a new VM with the given configuration, assigning it the next available CID.
+    ///
+    /// Returns a binder `IVirtualMachine` object referring to it, as a handle for the client.
+    fn startVm(&self, config_path: &str) -> binder::Result<Strong<dyn IVirtualMachine>> {
+        let state = &mut *self.state.lock().unwrap();
+        let cid = state.next_cid;
+        let instance = start_vm(config_path, cid)?;
+        // TODO(qwandor): keep track of which CIDs are currently in use so that we can reuse them.
+        state.next_cid = state.next_cid.checked_add(1).ok_or(StatusCode::UNKNOWN_ERROR)?;
+        Ok(VirtualMachine::create(Arc::new(instance)))
+    }
+}
+
+/// Implementation of the AIDL `IVirtualMachine` interface. Used as a handle to a VM.
+#[derive(Debug)]
+struct VirtualMachine {
+    instance: Arc<VmInstance>,
+}
+
+impl VirtualMachine {
+    fn create(instance: Arc<VmInstance>) -> Strong<dyn IVirtualMachine> {
+        let binder = VirtualMachine { instance };
+        BnVirtualMachine::new_binder(binder)
+    }
+}
+
+impl Interface for VirtualMachine {}
+
+impl IVirtualMachine for VirtualMachine {
+    fn getCid(&self) -> binder::Result<i32> {
+        Ok(self.instance.cid as i32)
+    }
+}
+
+/// The mutable state of the Virt Manager. There should only be one instance of this struct.
+#[derive(Debug)]
+struct State {
+    next_cid: Cid,
+}
+
+impl Default for State {
+    fn default() -> Self {
+        State { next_cid: FIRST_GUEST_CID }
+    }
+}
+
+/// Start a new VM instance from the given VM config filename. This assumes the VM is not already
+/// running.
+fn start_vm(config_path: &str, cid: Cid) -> binder::Result<VmInstance> {
+    let config = load_vm_config(config_path).map_err(|e| {
+        error!("Failed to load VM config {}: {:?}", config_path, e);
+        StatusCode::BAD_VALUE
+    })?;
+    Ok(VmInstance::start(&config, cid).map_err(|e| {
+        error!("Failed to start VM {}: {:?}", config_path, e);
+        StatusCode::UNKNOWN_ERROR
+    })?)
+}