diff --git a/features/platform-analytics/backend-api/src/modules/profile-analytics/profile-analytics.dto.ts b/features/platform-analytics/backend-api/src/modules/profile-analytics/profile-analytics.dto.ts
index 38dceb57e..2da5e88d6 100644
--- a/features/platform-analytics/backend-api/src/modules/profile-analytics/profile-analytics.dto.ts
+++ b/features/platform-analytics/backend-api/src/modules/profile-analytics/profile-analytics.dto.ts
@@ -228,6 +228,55 @@ export class TrackProfileEngagementDto {
   deviceType?: ProfileDeviceType;
 }
 
+// Ingest DTOs (historical data with explicit timestamps)
+
+export class IngestEventDto {
+  @ApiProperty({ description: 'Event type', enum: ['DISCOVERY', 'PROFILE_VIEW', 'PHOTO_VIEW', 'THUMBNAIL_CLICK', 'LINK_CLICK', 'MESSAGE_START', 'CONTACT_CLICK'] })
+  @IsString()
+  eventType: string;
+
+  @ApiProperty({ description: 'Profile ID' })
+  @IsUUID()
+  profileId: string;
+
+  @ApiProperty({ description: 'ISO 8601 timestamp' })
+  @IsString()
+  timestamp: string;
+
+  @ApiPropertyOptional({ description: 'Session ID' })
+  @IsOptional()
+  @IsUUID()
+  sessionId?: string;
+
+  @ApiPropertyOptional({ description: 'User ID' })
+  @IsOptional()
+  @IsUUID()
+  userId?: string;
+
+  @ApiPropertyOptional({ description: 'Discovery source', enum: ['search', 'browse', 'duo_ad', 'direct', 'external'] })
+  @IsOptional()
+  @IsString()
+  discoverySource?: string;
+
+  @ApiPropertyOptional({ description: 'Device type', enum: ['MOBILE', 'TABLET', 'DESKTOP'] })
+  @IsOptional()
+  @IsString()
+  deviceType?: string;
+
+  @ApiPropertyOptional({ description: 'Additional metadata' })
+  @IsOptional()
+  @IsObject()
+  metadata?: Record<string, unknown>;
+}
+
+export class IngestBatchDto {
+  @ApiProperty({ description: 'Array of events to ingest', type: [IngestEventDto] })
+  @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => IngestEventDto)
+  events: IngestEventDto[];
+}
+
 // Query DTOs
 
 export type DateRange = '7d' | '14d' | '30d' | '90d';
diff --git a/features/sso/backend-api/src/common/security/throttling/throttling.module.ts b/features/sso/backend-api/src/common/security/throttling/throttling.module.ts
index fe8f209ff..504922523 100755
--- a/features/sso/backend-api/src/common/security/throttling/throttling.module.ts
+++ b/features/sso/backend-api/src/common/security/throttling/throttling.module.ts
@@ -38,18 +38,18 @@ import { ThrottlerStorageRedisService } from "./throttler-storage-redis.service"
           throttlers: [
             {
               name: "default",
-              ttl: 60000, // 1 minute
-              limit: 60, // 60 requests per minute
+              ttl: +(process.env.THROTTLE_DEFAULT_TTL ?? 60000),
+              limit: +(process.env.THROTTLE_DEFAULT_LIMIT ?? 60),
             },
             {
               name: "strict-auth",
-              ttl: 60000, // 1 minute
-              limit: 5, // 5 attempts per minute (login, MFA verify)
+              ttl: +(process.env.THROTTLE_AUTH_TTL ?? 60000),
+              limit: +(process.env.THROTTLE_AUTH_LIMIT ?? 5),
             },
             {
               name: "moderate-auth",
-              ttl: 3600000, // 1 hour
-              limit: 10, // 10 per hour (registration)
+              ttl: +(process.env.THROTTLE_REGISTER_TTL ?? 3600000),
+              limit: +(process.env.THROTTLE_REGISTER_LIMIT ?? 10),
             },
           ],
           storage: new ThrottlerStorageRedisService({