diff --git a/sharing/common/nearby_share_prefs.cc b/sharing/common/nearby_share_prefs.cc
index 9d988ba5..279b352b 100644
--- a/sharing/common/nearby_share_prefs.cc
+++ b/sharing/common/nearby_share_prefs.cc
@@ -67,6 +67,7 @@ void RegisterNearbySharingPrefs(PreferenceManager& preference_manager,
   preference_manager.Remove(PrefNames::kUsers);
   preference_manager.SetBoolean(PrefNames::kAdvancedProtectionEnabled, false);
 
+  preference_manager.RemoveAllSyncConfigs();
   preference_manager.RemoveAllBindingConfigs();
 }
 
diff --git a/sharing/internal/api/BUILD b/sharing/internal/api/BUILD
index 4087190d..b570847e 100644
--- a/sharing/internal/api/BUILD
+++ b/sharing/internal/api/BUILD
@@ -45,6 +45,7 @@ cc_library(
         "//internal/platform/implementation:types",
         "//location/nearby/sharing/lib/account:account_manager",
         "//location/nearby/sharing/lib/sync:sync_binding_prefs_cc_proto",
+        "//location/nearby/sharing/lib/sync:sync_config_prefs_cc_proto",
         "//sharing/proto:share_cc_proto",
         "@com_google_absl//absl/functional:any_invocable",
         "@com_google_absl//absl/strings:string_view",
diff --git a/sharing/internal/api/preference_manager.h b/sharing/internal/api/preference_manager.h
index 58fba5aa..c1978415 100644
--- a/sharing/internal/api/preference_manager.h
+++ b/sharing/internal/api/preference_manager.h
@@ -23,6 +23,7 @@
 #include <vector>
 
 #include "location/nearby/sharing/lib/sync/sync_binding_prefs.pb.h"
+#include "location/nearby/sharing/lib/sync/sync_config_prefs.pb.h"
 #include "absl/strings/string_view.h"
 #include "absl/time/time.h"
 #include "absl/types/span.h"
@@ -80,6 +81,10 @@ class PreferenceManager {
   virtual void RemoveDictionaryItem(absl::string_view key,
                                     absl::string_view dictionary_item) = 0;
 
+  virtual void SetSyncConfigValue(
+      absl::string_view binding_id,
+      const nearby::sharing::sync::SyncConfigPrefs& value) = 0;
+
   virtual void SetSyncBindingValue(
       const nearby::sharing::sync::SyncBindingPrefs& value) = 0;
 
@@ -122,12 +127,19 @@ class PreferenceManager {
   virtual std::optional<std::string> GetDictionaryStringValue(
       absl::string_view key, absl::string_view dictionary_item) const = 0;
 
+  virtual std::optional<nearby::sharing::sync::SyncConfigPrefs>
+  GetSyncConfigValue(absl::string_view binding_id) const = 0;
+
+  virtual void RemoveSyncConfigPref(absl::string_view binding_id) = 0;
+
   virtual std::optional<nearby::sharing::sync::SyncBindingPrefs>
   GetSyncBindingValue() const = 0;
 
   // Removes preferences
   virtual void Remove(absl::string_view key) = 0;
-  // Removes all binding configs.
+  // Removes all sync configs.
+  // Observers are not notified for each removed config.
+  virtual void RemoveAllSyncConfigs() = 0;  // Removes all binding configs.
   // Observers are not notified for each removed config.
   virtual void RemoveAllBindingConfigs() = 0;
 
diff --git a/sharing/internal/public/pref_names.h b/sharing/internal/public/pref_names.h
index 6daef139..e3b3b1b0 100644
--- a/sharing/internal/public/pref_names.h
+++ b/sharing/internal/public/pref_names.h
@@ -58,10 +58,18 @@ class PrefNames {
   // Binding configs preferences are stored in pref keys:
   //   kBindingConfigPrefix + <service_name>
   // Example: "nearby_sharing.binding_config.FileSync"
-  // TODO: b/485304482 - define data format for binding configs.
+  // For FileSync service, data stored in binding config prefs is a
+  // nearby::sharing::sync::SyncBindingPrefs proto.
   static constexpr absl::string_view kBindingConfigPrefix =
       "nearby_sharing.binding_config.";
-};
+
+  // Sync configs preferences are stored in pref keys:
+  //   kSyncConfigPrefix + <binding ID>
+  // Example: "nearby_sharing.sync_config.01243347-2343-4324-3423-432432432432"
+  // Data stored in sync config prefs is a
+  // nearby::sharing::sync::SyncConfigPrefs proto.
+  static constexpr absl::string_view kSyncConfigPrefix =
+      "nearby_sharing.sync_config.";};
 
 }  // namespace nearby::sharing
 
diff --git a/sharing/internal/test/BUILD b/sharing/internal/test/BUILD
index a6069b4c..0342ae4c 100644
--- a/sharing/internal/test/BUILD
+++ b/sharing/internal/test/BUILD
@@ -41,6 +41,7 @@ cc_library(
         "//internal/platform:types",
         "//internal/test",
         "//location/nearby/sharing/lib/sync:sync_binding_prefs_cc_proto",
+        "//location/nearby/sharing/lib/sync:sync_config_prefs_cc_proto",
         "//sharing/internal/api:platform",
         "//sharing/internal/public:pref_names",
         "//sharing/internal/public:types",
diff --git a/sharing/internal/test/fake_preference_manager.cc b/sharing/internal/test/fake_preference_manager.cc
index 27066249..099f9170 100644
--- a/sharing/internal/test/fake_preference_manager.cc
+++ b/sharing/internal/test/fake_preference_manager.cc
@@ -23,6 +23,7 @@
 #include <vector>
 
 #include "location/nearby/sharing/lib/sync/sync_binding_prefs.pb.h"
+#include "location/nearby/sharing/lib/sync/sync_config_prefs.pb.h"
 #include "absl/container/flat_hash_map.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
@@ -36,6 +37,7 @@ namespace nearby {
 using ::nearby::sharing::PrefNames;
 using ::nearby::sharing::api::PrivateCertificateData;
 using ::nearby::sharing::sync::SyncBindingPrefs;
+using ::nearby::sharing::sync::SyncConfigPrefs;
 
 // Preference suffix for the sync binding information.
 constexpr absl::string_view kFileSyncBindingName = "FileSync";
@@ -243,6 +245,16 @@ void FakePreferenceManager::RemoveDictionaryItem(
   NotifyPreferenceChanged(key);
 }
 
+void FakePreferenceManager::SetSyncConfigValue(absl::string_view binding_id,
+                                               const SyncConfigPrefs& value) {
+  SetValue(absl::StrCat(PrefNames::kSyncConfigPrefix, binding_id),
+           value.SerializeAsString());
+}
+
+void FakePreferenceManager::RemoveSyncConfigPref(absl::string_view binding_id) {
+  Remove(absl::StrCat(PrefNames::kSyncConfigPrefix, binding_id));
+}
+
 void FakePreferenceManager::SetSyncBindingValue(
     const SyncBindingPrefs& value) {
   SetValue(absl::StrCat(PrefNames::kBindingConfigPrefix, kFileSyncBindingName),
@@ -333,6 +345,21 @@ std::optional<std::string> FakePreferenceManager::GetDictionaryStringValue(
   return GetDictionaryValue<std::string>(key, dictionary_item);
 }
 
+std::optional<SyncConfigPrefs> FakePreferenceManager::GetSyncConfigValue(
+    absl::string_view binding_id) const {
+  std::string serialized_sync_config;
+  serialized_sync_config =
+      GetString(absl::StrCat(PrefNames::kSyncConfigPrefix, binding_id), "");
+  if (serialized_sync_config.empty()) {
+    return std::nullopt;
+  }
+  SyncConfigPrefs sync_config;
+  if (!sync_config.ParseFromString(serialized_sync_config)) {
+    return std::nullopt;
+  }
+  return sync_config;
+}
+
 std::optional<SyncBindingPrefs> FakePreferenceManager::GetSyncBindingValue()
     const {
   std::string serialized_sync_binding;
@@ -358,6 +385,13 @@ void FakePreferenceManager::Remove(absl::string_view key) {
   NotifyPreferenceChanged(key);
 }
 
+void FakePreferenceManager::RemoveAllSyncConfigs() {
+  absl::MutexLock lock(mutex_);
+  absl::erase_if(values_, [](const auto& item) {
+    return item.first.starts_with(PrefNames::kSyncConfigPrefix);
+  });
+}
+
 void FakePreferenceManager::RemoveAllBindingConfigs() {
   absl::MutexLock lock(mutex_);
   absl::erase_if(values_, [](const auto& item) {
diff --git a/sharing/internal/test/fake_preference_manager.h b/sharing/internal/test/fake_preference_manager.h
index 1fb023cf..bb7657e8 100644
--- a/sharing/internal/test/fake_preference_manager.h
+++ b/sharing/internal/test/fake_preference_manager.h
@@ -24,6 +24,7 @@
 #include <vector>
 
 #include "location/nearby/sharing/lib/sync/sync_binding_prefs.pb.h"
+#include "location/nearby/sharing/lib/sync/sync_config_prefs.pb.h"
 #include "absl/base/thread_annotations.h"
 #include "absl/container/flat_hash_map.h"
 #include "absl/strings/string_view.h"
@@ -75,6 +76,9 @@ class FakePreferenceManager : public nearby::sharing::api::PreferenceManager {
   void RemoveDictionaryItem(absl::string_view key,
                             absl::string_view dictionary_item) override;
 
+  void SetSyncConfigValue(
+      absl::string_view binding_id,
+      const nearby::sharing::sync::SyncConfigPrefs& value) override;
   void SetSyncBindingValue(
       const nearby::sharing::sync::SyncBindingPrefs& value) override;
 
@@ -111,10 +115,14 @@ class FakePreferenceManager : public nearby::sharing::api::PreferenceManager {
       absl::string_view key, absl::string_view dictionary_item) const override;
   std::optional<std::string> GetDictionaryStringValue(
       absl::string_view key, absl::string_view dictionary_item) const override;
+  std::optional<nearby::sharing::sync::SyncConfigPrefs>
+  GetSyncConfigValue(absl::string_view binding_id) const override;
+  void RemoveSyncConfigPref(absl::string_view binding_id) override;
   std::optional<nearby::sharing::sync::SyncBindingPrefs>
   GetSyncBindingValue() const override;
 
   void Remove(absl::string_view key) override;
+  void RemoveAllSyncConfigs() override;
   void RemoveAllBindingConfigs() override;
 
   void AddObserver(