diff --git a/Cargo.lock b/Cargo.lock
index 600a949..538e888 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -289,6 +289,12 @@ version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
 
+[[package]]
+name = "downcast"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1435fa1053d8b2fbbe9be7e97eca7f33d37b28409959813daefc1446a14247f1"
+
 [[package]]
 name = "either"
 version = "1.10.0"
@@ -331,6 +337,7 @@ dependencies = [
  "axum 0.7.4",
  "clap",
  "dotenv",
+ "mockall",
  "prost",
  "tokio",
  "tonic",
@@ -354,6 +361,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fragile"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c2141d6d6c8512188a7891b4b01590a45f6dac67afb4f255c4124dbb86d4eaa"
+
 [[package]]
 name = "futures-channel"
 version = "0.3.28"
@@ -750,6 +763,33 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "mockall"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43766c2b5203b10de348ffe19f7e54564b64f3d6018ff7648d1e2d6d3a0f0a48"
+dependencies = [
+ "cfg-if",
+ "downcast",
+ "fragile",
+ "lazy_static",
+ "mockall_derive",
+ "predicates",
+ "predicates-tree",
+]
+
+[[package]]
+name = "mockall_derive"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af7cbce79ec385a1d4f54baa90a76401eb15d9cab93685f62e7e9f942aa00ae2"
+dependencies = [
+ "cfg-if",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "multimap"
 version = "0.8.3"
@@ -865,6 +905,32 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
+[[package]]
+name = "predicates"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68b87bfd4605926cdfefc1c3b5f8fe560e3feca9d5552cf68c466d3d8236c7e8"
+dependencies = [
+ "anstyle",
+ "predicates-core",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b794032607612e7abeb4db69adb4e33590fa6cf1149e95fd7cb00e634b92f174"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "368ba315fb8c5052ab692e68a0eefec6ec57b23a36959c14496f0b0df2c0cecf"
+dependencies = [
+ "predicates-core",
+ "termtree",
+]
+
 [[package]]
 name = "prettyplease"
 version = "0.2.16"
@@ -1186,6 +1252,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "termtree"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3369f5ac52d5eb6ab48c6b4ffdc8efbcad6b89c765749064ba298f2c68a16a76"
+
 [[package]]
 name = "thread_local"
 version = "1.1.7"
diff --git a/crates/flux-releaser/Cargo.toml b/crates/flux-releaser/Cargo.toml
index 157b5c9..71c66ea 100644
--- a/crates/flux-releaser/Cargo.toml
+++ b/crates/flux-releaser/Cargo.toml
@@ -16,3 +16,6 @@ tonic = "0.11.0"
 
 [build-dependencies]
 tonic-build = "0.11.0"
+
+[dev-dependencies]
+mockall = "0.12.1"
diff --git a/crates/flux-releaser/src/main.rs b/crates/flux-releaser/src/main.rs
index bda7699..fe619bd 100644
--- a/crates/flux-releaser/src/main.rs
+++ b/crates/flux-releaser/src/main.rs
@@ -7,6 +7,8 @@ mod grpc;
 
 mod app;
 
+mod services;
+
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     dotenv::dotenv().ok();
diff --git a/crates/flux-releaser/src/services.rs b/crates/flux-releaser/src/services.rs
new file mode 100644
index 0000000..69311ed
--- /dev/null
+++ b/crates/flux-releaser/src/services.rs
@@ -0,0 +1 @@
+pub mod release_manager;
diff --git a/crates/flux-releaser/src/services/release_manager.rs b/crates/flux-releaser/src/services/release_manager.rs
new file mode 100644
index 0000000..9711aff
--- /dev/null
+++ b/crates/flux-releaser/src/services/release_manager.rs
@@ -0,0 +1,25 @@
+mod default;
+pub mod traits;
+
+use std::sync::Arc;
+
+#[derive(Clone)]
+pub struct ReleaseManager {
+    inner: Arc<dyn traits::ReleaseManager>,
+}
+
+impl ReleaseManager {
+    pub fn get_default() -> Self {
+        Self {
+            inner: Arc::new(default::ReleaseManager::new()),
+        }
+    }
+}
+
+impl std::ops::Deref for ReleaseManager {
+    type Target = Arc<dyn traits::ReleaseManager>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.inner
+    }
+}
diff --git a/crates/flux-releaser/src/services/release_manager/default.rs b/crates/flux-releaser/src/services/release_manager/default.rs
new file mode 100644
index 0000000..2d9ae42
--- /dev/null
+++ b/crates/flux-releaser/src/services/release_manager/default.rs
@@ -0,0 +1,11 @@
+use super::traits;
+
+pub struct ReleaseManager {}
+
+impl ReleaseManager {
+    pub fn new() -> Self {
+        Self {}
+    }
+}
+
+impl traits::ReleaseManager for ReleaseManager {}
diff --git a/crates/flux-releaser/src/services/release_manager/traits.rs b/crates/flux-releaser/src/services/release_manager/traits.rs
new file mode 100644
index 0000000..275d272
--- /dev/null
+++ b/crates/flux-releaser/src/services/release_manager/traits.rs
@@ -0,0 +1,4 @@
+#[cfg(test)]
+use mockall::{automock, mock, predicate::*};
+#[cfg_attr(test, automock)]
+pub trait ReleaseManager {}