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APIs & Integrations

Middleware

Middleware connects applications or components and handles tasks such as data transformation, authentication, or message routing.

Middleware connects applications or components and handles tasks such as data transformation, authentication, or message routing. Strong implementations use explicit data contracts, secure authentication, error handling, and observable operations. The concept is closely related to API and Data Integration.

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API

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Serverless Function

iPaaS

FAQ

Middleware

How can middleware be implemented with serverless functions?
Serverless functions suit lightweight, event-driven middleware, such as reshaping form data or protecting API calls. The provider handles operations and scaling. For long-running processes, many chained steps, or strict latency requirements, an always-on service or an integration platform may be the better fit.
What risks does an additional middleware layer introduce?
The layer becomes another point of failure and adds latency to every request. Maintenance effort and hidden business logic follow when ownership and documentation are missing. Explicit data contracts, error handling with retry logic, and monitoring limit these risks, but they do not remove them entirely.
How does middleware differ from an API?
An API defines the interface through which a system exposes functions or data. Middleware, by contrast, is a separate layer that translates, validates, or forwards between systems and usually consumes APIs itself. The API is the offer; the middleware is the broker between several such offers.
When does middleware between two systems pay off?
Middleware pays off when systems bring different data formats, authentication methods, or failure behavior, and direct coupling would become brittle. A central layer keeps that logic in one place. For a single, simple connection it only adds operational overhead without a visible benefit.