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World Congress 2026 Europe • Jul 10, 2026 • Session details

REST, GraphQL, gRPC, and more: A comparison of modern API styles

Florian Bader

Is REST holding your scaling platform back? Discover exactly when to choose GraphQL, gRPC, or OData based on real-world trade-offs rather than technical hype.

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#1 about 3 min

Overview of modern API styles and the IoT scenario

A comparative look at modern web API options through a baseline IoT telemetry architecture.

#2 about 5 min

Modeling resource APIs with REST and OpenAPI

How modeling resources with REST and OpenAPI works despite inherent over-fetching limitations.

#3 about 6 min

Solving data fetching demands with GraphQL

How GraphQL allows client-driven queries to reduce over-fetching while introducing complexities like the N+1 problem.

#4 about 4 min

Standardizing data access schemas with OData

Utilizing OData for highly optimized, standardized queries and batch operations favored by enterprise data tools.

#5 about 5 min

Establishing internal service communication with gRPC

Leveraging gRPC and Protobuf for highly efficient, strongly-typed binary communication between internal microservices.

#6 about 4 min

Implementing real-time telemetry updates and subscriptions

Transitioning from inefficient polling to real-time event communication using WebSockets, GraphQL subscriptions, and SignalR abstractions.

#7 about 5 min

Evaluating and selecting appropriate API architectures

How to adopt the right API architecture depending on consumer constraints, performance requirements, and operational reality.

Matching moments

57 sec

Choosing the right API protocol today

Simon Auer Simon Auer · WWC 2025

1:55 min

Evolution of API interfaces toward declarative data fetching

Gregor Bauer Gregor Bauer · WWC 2024

3:35 min

Evaluating benefits and drawbacks of common API formats

Alexis Yushin Alexis Yushin · WWC 2024

2:01 min

Exploring alternative data retrieval methods beyond standard REST patterns

Rustam Mehmandarov Rustam Mehmandarov · WWC 2025

56 sec

Comparing GraphQL capabilities against the JSON API standard

Alen Pokos · LIVE

1:52 min

Core concepts and categories of APIs

Simon Auer Simon Auer · WWC 2025

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