diff --git a/splitio_platform_interface/lib/split_configuration.dart b/splitio_platform_interface/lib/split_configuration.dart
index 1d54fdd..4a0400a 100644
--- a/splitio_platform_interface/lib/split_configuration.dart
+++ b/splitio_platform_interface/lib/split_configuration.dart
@@ -1,4 +1,5 @@
 import 'package:splitio_platform_interface/split_certificate_pinning_configuration.dart';
+import 'package:splitio_platform_interface/split_fallback_treatments_configuration.dart';
 import 'package:splitio_platform_interface/split_sync_config.dart';
 import 'package:splitio_platform_interface/split_rollout_cache_configuration.dart';
 
@@ -48,6 +49,10 @@ class SplitConfiguration {
   /// [readyTimeout] Maximum amount of time in seconds to wait before firing the SDK_READY_TIMED_OUT event. Defaults to 10 seconds.
   ///
   /// [certificatePinningConfiguration] Certificate pinning configuration. Pins need to have the format of a base64 SHA-256 or base64 SHA-1 hashes of the SPKI (ex.: "sha256/7HIpactkIAq2Y49orFOOQKurWxmmSFZhBCoQYcRhJ3Y="). Not supported in Web.
+  ///
+  /// [rolloutCacheConfiguration] Rollout cache configuration.
+  ///
+  /// [fallbackTreatmentsConfiguration] Fallback treatments configuration.
   SplitConfiguration({
     int? featuresRefreshRate,
     int? segmentsRefreshRate,
@@ -76,6 +81,7 @@ class SplitConfiguration {
     int? readyTimeout = 10,
     CertificatePinningConfiguration? certificatePinningConfiguration,
     RolloutCacheConfiguration? rolloutCacheConfiguration,
+    FallbackTreatmentsConfiguration? fallbackTreatmentsConfiguration,
   }) {
     if (featuresRefreshRate != null) {
       configurationMap['featuresRefreshRate'] = featuresRefreshRate;
@@ -195,6 +201,13 @@ class SplitConfiguration {
         'clearOnInit': rolloutCacheConfiguration.clearOnInit
       };
     }
+
+    if (fallbackTreatmentsConfiguration != null) {
+      configurationMap['fallbackTreatmentsConfiguration'] = {
+        'global': fallbackTreatmentsConfiguration.global,
+        'byFlag': fallbackTreatmentsConfiguration.byFlag
+      };
+    }
   }
 }
 
diff --git a/splitio_platform_interface/lib/split_fallback_treatments_configuration.dart b/splitio_platform_interface/lib/split_fallback_treatments_configuration.dart
new file mode 100644
index 0000000..53abefa
--- /dev/null
+++ b/splitio_platform_interface/lib/split_fallback_treatments_configuration.dart
@@ -0,0 +1,18 @@
+import 'package:splitio_platform_interface/split_result.dart';
+
+class FallbackTreatmentsConfiguration {
+  late Map<String, String?>? _global;
+  late Map<String, Map<String, String?>>? _byFlag;
+
+  Map<String, String?>? get global => _global;
+  Map<String, Map<String, String?>>? get byFlag => _byFlag;
+
+  FallbackTreatmentsConfiguration(
+      {SplitResult? global, Map<String, SplitResult>? byFlag}) {
+    _global = global != null
+        ? {'treatment': global.treatment, 'config': global.config}
+        : null;
+    _byFlag = byFlag?.map((key, value) =>
+        MapEntry(key, {'treatment': value.treatment, 'config': value.config}));
+  }
+}
diff --git a/splitio_platform_interface/test/split_fallback_treatments_configuration_test.dart b/splitio_platform_interface/test/split_fallback_treatments_configuration_test.dart
new file mode 100644
index 0000000..b520b56
--- /dev/null
+++ b/splitio_platform_interface/test/split_fallback_treatments_configuration_test.dart
@@ -0,0 +1,23 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:splitio_platform_interface/split_fallback_treatments_configuration.dart';
+import 'package:splitio_platform_interface/split_result.dart';
+
+void main() {
+  test('global and by flag fallback treatments', () {
+    var config = FallbackTreatmentsConfiguration(global: const SplitResult('custom-treatment', null));
+
+    expect(config.global, equals({'treatment': 'custom-treatment', 'config': null}));
+    expect(config.byFlag, null);
+
+    config = FallbackTreatmentsConfiguration(byFlag: {'flag1': const SplitResult('custom-treatment', 'custom-config')});
+    expect(config.byFlag, equals({'flag1': {'treatment': 'custom-treatment', 'config': 'custom-config'}}));
+    expect(config.global, null);
+  });
+
+  test('default values', () {
+    var config = FallbackTreatmentsConfiguration();
+
+    expect(config.global, null);
+    expect(config.byFlag, null);
+  });
+}
\ No newline at end of file
diff --git a/splitio_platform_interface/test/splitio_configuration_test.dart b/splitio_platform_interface/test/splitio_configuration_test.dart
index 64b758c..0f740d4 100644
--- a/splitio_platform_interface/test/splitio_configuration_test.dart
+++ b/splitio_platform_interface/test/splitio_configuration_test.dart
@@ -1,6 +1,8 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:splitio_platform_interface/split_certificate_pinning_configuration.dart';
 import 'package:splitio_platform_interface/split_configuration.dart';
+import 'package:splitio_platform_interface/split_fallback_treatments_configuration.dart';
+import 'package:splitio_platform_interface/split_result.dart';
 import 'package:splitio_platform_interface/split_rollout_cache_configuration.dart';
 import 'package:splitio_platform_interface/split_sync_config.dart';
 
@@ -36,7 +38,8 @@ void main() {
             .addPin('host1', 'pin1')
             .addPin('host2', 'pin3')
             .addPin('host1', 'pin2'),
-        rolloutCacheConfiguration: RolloutCacheConfiguration(expirationDays: 15, clearOnInit: true));
+        rolloutCacheConfiguration: RolloutCacheConfiguration(expirationDays: 15, clearOnInit: true),
+        fallbackTreatmentsConfiguration: FallbackTreatmentsConfiguration(global: const SplitResult('custom-treatment', null)));
 
     expect(config.configurationMap['eventFlushInterval'], 2000);
     expect(config.configurationMap['eventsPerPush'], 300);
@@ -75,6 +78,8 @@ void main() {
     });
     expect(config.configurationMap['rolloutCacheConfiguration']['expirationDays'], 15);
     expect(config.configurationMap['rolloutCacheConfiguration']['clearOnInit'], true);
+    expect(config.configurationMap['fallbackTreatmentsConfiguration']['global'], equals({'treatment': 'custom-treatment', 'config': null}));
+    expect(config.configurationMap['fallbackTreatmentsConfiguration']['byFlag'], null);
   });
 
   test('no special values leaves map empty', () async {