diff --git a/src/entity_manager.cpp b/src/entity_manager.cpp
index 2ab88e3..1544680 100644
--- a/src/entity_manager.cpp
+++ b/src/entity_manager.cpp
@@ -18,6 +18,7 @@
 #include "entity_manager.hpp"
 
 #include "overlay.hpp"
+#include "topology.hpp"
 #include "utils.hpp"
 #include "variant_visitors.hpp"
 
@@ -565,6 +566,8 @@
                 sdbusplus::asio::object_server& objServer)
 
 {
+    Topology topology;
+
     // iterate through boards
     for (const auto& [boardId, boardConfig] : newConfiguration.items())
     {
@@ -768,8 +771,19 @@
                     }
                 }
             }
+
+            topology.addBoard(boardName, boardType, item);
         }
     }
+
+    for (const auto& boardAssoc : topology.getAssocs())
+    {
+        auto ifacePtr = objServer.add_interface(
+            boardAssoc.first, "xyz.openbmc_project.Association.Definitions");
+
+        ifacePtr->register_property("Associations", boardAssoc.second);
+        ifacePtr->initialize();
+    }
 }
 
 // reads json files out of the filesystem
diff --git a/src/meson.build b/src/meson.build
index d2959bf..0ada42d 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -8,6 +8,7 @@
     'perform_scan.cpp',
     'perform_probe.cpp',
     'overlay.cpp',
+    'topology.cpp',
     'utils.cpp',
     cpp_args: cpp_args + ['-DBOOST_ASIO_DISABLE_THREADS'],
     dependencies: [