diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.Host/Program.cs b/src/Server/ZB.MOM.WW.OtOpcUa.Host/Program.cs
index 4a9dd50c..9ae0abb7 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.Host/Program.cs
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.Host/Program.cs
@@ -20,6 +20,7 @@ using ZB.MOM.WW.OtOpcUa.Runtime;
 using ZB.MOM.WW.OtOpcUa.Security;
 using ZB.MOM.WW.OtOpcUa.Security.Endpoints;
 using ZB.MOM.WW.OtOpcUa.Security.Ldap;
+using ZB.MOM.WW.Telemetry.Serilog;
 
 // Roles drive the entire conditional wiring below — see ZB.MOM.WW.OtOpcUa.Cluster.RoleParser.
 var roles = RoleParser.Parse(Environment.GetEnvironmentVariable("OTOPCUA_ROLES"));
@@ -45,11 +46,10 @@ var roleSuffix = roles.Length == 0 ? null : string.Join('-', roles.OrderBy(r =>
 if (roleSuffix is not null)
     builder.Configuration.AddJsonFile($"appsettings.{roleSuffix}.json", optional: true, reloadOnChange: true);
 
-// Serilog — rolling daily file sink per CLAUDE.md. Console for local dev.
-builder.Host.UseSerilog((ctx, lc) => lc
-    .ReadFrom.Configuration(ctx.Configuration)
-    .WriteTo.Console()
-    .WriteTo.File("logs/otopcua-.log", rollingInterval: RollingInterval.Day));
+// Serilog — shared ZB.MOM.WW.Telemetry bootstrap. Sinks (Console + rolling daily file)
+// now live in appsettings.json (ReadFrom.Configuration); AddZbSerilog layers in the
+// shared NodeHostname / TraceContext / Redaction enrichers and trace correlation.
+builder.AddZbSerilog(o => o.ServiceName = "otopcua");
 
 // Windows-service registration is handled at install time by scripts/install/Install-Services.ps1
 // (Task 62) rather than in-process, so the binary stays cross-platform-compilable.
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.Host/appsettings.json b/src/Server/ZB.MOM.WW.OtOpcUa.Host/appsettings.json
index 0967ef42..ec8ed457 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.Host/appsettings.json
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.Host/appsettings.json
@@ -1 +1,9 @@
-{}
+{
+  "Serilog": {
+    "Using": [ "Serilog.Sinks.Console", "Serilog.Sinks.File" ],
+    "WriteTo": [
+      { "Name": "Console" },
+      { "Name": "File", "Args": { "path": "logs/otopcua-.log", "rollingInterval": "Day" } }
+    ]
+  }
+}