By completing this course, learners will:

• Build and deploy federated GraphQL architectures.

• Use Apollo Federation tools for schema composition.

• Design modular and scalable API schemas.

• Collaborate across teams and domains using subgraphs.

• Secure, monitor, and optimize federated APIs.

Course Syllabus

Module 1: Introduction to GraphQL Federation

• What is GraphQL Federation?

• Problems Federation solves vs schema stitching

• Key concepts: subgraphs, entities, and gateway

Module 2: Setting Up Federation

• Installing Apollo Federation libraries

• Defining subgraphs and schemas

• Running an Apollo Gateway

Module 3: Entities & References

• Entity definitions and resolvers

• Sharing types across subgraphs

• @key directive explained

Module 4: Schema Composition

• Composing schemas into a unified graph

• Managing schema conflicts

• Tools for schema validation

Module 5: Resolvers & Data Fetching

• Writing resolvers for federated services

• Handling cross-service relationships

• Optimizing data fetching

Module 6: Deployment Strategies

• Running subgraphs independently

• Apollo Gateway deployment

• Scaling federated services in production

Module 7: Security & Monitoring

• Authentication and authorization in Federation

• Rate limiting and query complexity control

• Monitoring with Apollo Studio and observability tools

Module 8: Real-World Projects

• Federated e-commerce API (products, users, orders)

• Multi-team SaaS application backend

• Cross-domain analytics API

Module 9: Advanced Federation Patterns

• Versioning and schema governance

• Migrating from monolithic GraphQL to Federation

• Combining Federation with REST/other APIs

Module 10: Best Practices & Future Trends

• Collaboration workflows for multiple teams

• Testing federated services

• The future of GraphQL Federation

Learners will receive a Certificate of Completion from Uplatz, validating their expertise in GraphQL Federation and distributed API design. This certification demonstrates readiness for roles in backend engineering, full-stack development, and API architecture.

GraphQL Federation expertise prepares learners for roles such as:

• Backend Developer (GraphQL APIs)

• Full-Stack Developer (Federated APIs)

• API Engineer

• Solutions Architect

• Enterprise Integration Specialist

Federation is increasingly adopted by large enterprises and SaaS platforms, making it a critical skill for developers building scalable distributed systems.

1. What is GraphQL Federation?
   A model for combining multiple GraphQL services into a single unified graph.

2. How is Federation different from schema stitching?
   Federation provides entity-based composition with clearer ownership, while schema stitching merges schemas without governance.

3. What is the role of Apollo Gateway?
   It unifies subgraphs into a single query endpoint for clients.

4. What are entities in GraphQL Federation?
   Shared objects across subgraphs identified with the @key directive.

5. How do subgraphs communicate in Federation?
   Via entity references and resolvers managed by the gateway.

6. What are common use cases for Federation?
   Large-scale SaaS, e-commerce platforms, and multi-team enterprise APIs.

7. How do you secure federated GraphQL APIs?
   With authentication, authorization, rate limiting, and query complexity checks.

8. What are the challenges of Federation?
   Schema governance, performance optimization, and cross-team coordination.

9. What are advantages of Federation?

• Modular schema design

• Team autonomy

• Scalability

10. Where is Federation widely used?
    By enterprises with distributed teams, SaaS companies, and cloud providers.