azure
AI Infrastructure
intermediate
Platform content safety at scale

Content Moderation AI Pipeline

AI Infrastructure

Content moderation at scale requires automated AI classification (text toxicity, image safety, video analysis) with human reviewers handling edge cases. This Azure-native pipeline processes uploads through Azure AI Content Safety classifiers in parallel, routes flagged content to human review queues based on severity and confidence scores, and enforces platform policies with configurable thresholds. Essential for platform trust-and-safety teams automating content review at scale with human-in-the-loop escalation and appeals.

Data Flow

Moderation API
Content Queue
Content Archive
Text Classifier
Image Classifier
Human Review Queue
AI Content Safety
Decision Log
Notification Service

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Service Breakdown (9 services)

Other9 services
Moderation API
  • Exposes backend services through managed API endpoints
  • Enforces authentication, throttling, and quotas
  • Provides developer portal and API analytics
Content Queue
  • Provides reliable enterprise message brokering
  • Supports topics and queue-based messaging
  • Guarantees at-least-once delivery
Text Classifier
  • Hosts web applications with built-in auto-scaling
  • Supports deployment slots for blue-green releases
  • Integrates with Azure DevOps for CI/CD pipelines
Image Classifier
  • Hosts web applications with built-in auto-scaling
  • Supports deployment slots for blue-green releases
  • Integrates with Azure DevOps for CI/CD pipelines
AI Content Safety
  • Classifies content against policy violation categories
  • Scores text and images for toxicity and harm
  • Returns confidence levels for moderation decisions
Human Review Queue
  • Provides reliable enterprise message brokering
  • Supports topics and queue-based messaging
  • Guarantees at-least-once delivery
Decision Log
  • Provides globally distributed multi-model database
  • Guarantees single-digit ms reads worldwide
  • Supports five consistency levels
Notification Service
  • Orchestrates delivery across push, email, and SMS
  • Applies user preferences and quiet-hours rules
  • Tracks delivery status and handles retries
Content Archive
  • Retains moderated content for audit and appeals
  • Supports legal hold and compliance retention policies
  • Enables retrieval of flagged items for re-review

Scaling Strategy

Content flows through Service Bus into parallel classification pipelines — text, image, and video each have dedicated App Service workers scaling independently. Azure AI Content Safety handles classification with automatic scaling. Low-confidence or high-severity results route to human review via a separate Service Bus queue. Cosmos DB stores moderation decisions with audit trails. Event Grid notifies content owners of decisions, and Functions handles appeal processing with separate reviewer routing.

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