diff --git a/editoast/Cargo.lock b/editoast/Cargo.lock
index 86e93ff2c30..bf67cf18972 100644
--- a/editoast/Cargo.lock
+++ b/editoast/Cargo.lock
@@ -1363,6 +1363,7 @@ dependencies = [
  "opentelemetry",
  "opentelemetry-otlp",
  "opentelemetry-semantic-conventions",
+ "opentelemetry-stdout",
  "opentelemetry_sdk",
  "ordered-float",
  "osm_to_railjson",
@@ -3085,6 +3086,23 @@ version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db945c1eaea8ac6a9677185357480d215bb6999faa9f691d0c4d4d641eab7a09"
 
+[[package]]
+name = "opentelemetry-stdout"
+version = "0.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc8a298402aa5c260be90d10dc54b5a7d4e1025c354848f8e2c976d761351049"
+dependencies = [
+ "async-trait",
+ "chrono",
+ "futures-util",
+ "opentelemetry",
+ "opentelemetry_sdk",
+ "ordered-float",
+ "serde",
+ "serde_json",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "opentelemetry_sdk"
 version = "0.27.1"
diff --git a/editoast/Cargo.toml b/editoast/Cargo.toml
index b70a36242b0..6dd743dd7d5 100644
--- a/editoast/Cargo.toml
+++ b/editoast/Cargo.toml
@@ -199,6 +199,7 @@ axum = { version = "0.7.9", default-features = false, features = [
 editoast_authz = { workspace = true, features = ["fixtures"] }
 editoast_models = { workspace = true, features = ["testing"] }
 editoast_osrdyne_client = { workspace = true, features = ["mock_client"] }
+opentelemetry-stdout = { version = "0.27.0" }
 pretty_assertions.workspace = true
 rstest.workspace = true
 serial_test = "3.2.0"
diff --git a/editoast/src/main.rs b/editoast/src/main.rs
index 7ca4b46553f..3b5d9438fc7 100644
--- a/editoast/src/main.rs
+++ b/editoast/src/main.rs
@@ -33,10 +33,14 @@ use client::Commands;
 use editoast_models::DbConnectionPoolV2;
 use models::RollingStockModel;
 use opentelemetry::trace::TracerProvider as _;
+use opentelemetry_sdk::export::trace::SpanExporter;
 use opentelemetry_sdk::propagation::TraceContextPropagator;
 use opentelemetry_sdk::resource::EnvResourceDetector;
 use opentelemetry_sdk::resource::SdkProvidedResourceDetector;
 use opentelemetry_sdk::resource::TelemetryResourceDetector;
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::util::SubscriberInitExt;
+use tracing_subscriber::Layer;
 pub use views::AppState;
 
 use models::prelude::*;
@@ -50,9 +54,6 @@ use std::sync::Arc;
 use std::time::Duration;
 use thiserror::Error;
 use tracing::error;
-use tracing_subscriber::layer::SubscriberExt as _;
-use tracing_subscriber::util::SubscriberInitExt as _;
-use tracing_subscriber::Layer as _;
 pub use valkey_utils::ValkeyClient;
 pub use valkey_utils::ValkeyConnection;
 
@@ -66,12 +67,16 @@ pub use valkey_utils::ValkeyConnection;
 /// - we *expect* a webserver to output logging information, so since it's an expected
 ///   output (and not extra information), it should be on stdout
 #[derive(Debug, PartialEq)]
-enum EditoastMode {
+pub enum EditoastMode {
     Webservice,
     Cli,
 }
 
-fn init_tracing(mode: EditoastMode, telemetry_config: &client::TelemetryConfig) {
+pub fn init_tracing<T: SpanExporter + 'static>(
+    mode: EditoastMode,
+    telemetry_config: &client::TelemetryConfig,
+    exporter: T,
+) -> impl tracing::Subscriber {
     let env_filter_layer = tracing_subscriber::EnvFilter::builder()
         // Set the default log level to 'info'
         .with_default_directive(tracing_subscriber::filter::LevelFilter::INFO.into())
@@ -89,11 +94,6 @@ fn init_tracing(mode: EditoastMode, telemetry_config: &client::TelemetryConfig)
     let telemetry_layer = match telemetry_config.telemetry_kind {
         client::TelemetryKind::None => None,
         client::TelemetryKind::Opentelemetry => {
-            let exporter = opentelemetry_otlp::SpanExporter::builder()
-                .with_tonic()
-                .with_endpoint(telemetry_config.telemetry_endpoint.as_str())
-                .build()
-                .expect("failed to build a span exporter");
             let resource = Resource::new(vec![KeyValue::new(
                 opentelemetry_semantic_conventions::resource::SERVICE_NAME,
                 telemetry_config.service_name.clone(),
@@ -116,11 +116,11 @@ fn init_tracing(mode: EditoastMode, telemetry_config: &client::TelemetryConfig)
             Some(layer)
         }
     };
+
     tracing_subscriber::registry()
         .with(telemetry_layer)
         .with(env_filter_layer)
         .with(fmt_layer)
-        .init();
 }
 
 impl EditoastMode {
@@ -151,7 +151,17 @@ async fn main() {
 
 async fn run() -> Result<(), Box<dyn Error + Send + Sync>> {
     let client = Client::parse();
-    init_tracing(EditoastMode::from_client(&client), &client.telemetry_config);
+    let exporter = opentelemetry_otlp::SpanExporter::builder()
+        .with_tonic()
+        .with_endpoint(client.telemetry_config.telemetry_endpoint.as_str())
+        .build()
+        .expect("failed to build a span exporter");
+    init_tracing(
+        EditoastMode::from_client(&client),
+        &client.telemetry_config,
+        exporter,
+    )
+    .init();
 
     let pg_config = client.postgres_config;
     let db_pool =
diff --git a/editoast/src/views/test_app.rs b/editoast/src/views/test_app.rs
index 9ab47d93081..022844e904d 100644
--- a/editoast/src/views/test_app.rs
+++ b/editoast/src/views/test_app.rs
@@ -14,12 +14,14 @@ use tower_http::trace::TraceLayer;
 use url::Url;
 
 use crate::{
+    client::{TelemetryConfig, TelemetryKind},
     core::{mocking::MockingClient, CoreClient},
     generated_data::speed_limit_tags_config::SpeedLimitTagIds,
     infra_cache::InfraCache,
+    init_tracing,
     map::MapLayers,
     valkey_utils::ValkeyConfig,
-    AppState, ValkeyClient,
+    AppState, EditoastMode, ValkeyClient,
 };
 use axum_test::TestRequest;
 use axum_test::TestServer;
@@ -106,15 +108,12 @@ impl TestAppBuilder {
         };
 
         // Setup tracing
-        let sub = tracing_subscriber::fmt()
-            .pretty()
-            .with_env_filter(
-                tracing_subscriber::EnvFilter::builder()
-                    .with_default_directive(tracing_subscriber::filter::LevelFilter::DEBUG.into())
-                    .from_env_lossy(),
-            )
-            .with_span_events(tracing_subscriber::fmt::format::FmtSpan::CLOSE)
-            .finish();
+        let exporter = opentelemetry_stdout::SpanExporter::default();
+        let telemety_config = TelemetryConfig {
+            telemetry_kind: TelemetryKind::Opentelemetry,
+            ..Default::default()
+        };
+        let sub = init_tracing(EditoastMode::Webservice, &telemety_config, exporter);
         let tracing_guard = tracing::subscriber::set_default(sub);
 
         // Config valkey