Here are the typical API application areas for seamless data transfer

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Data Integration
Whenever a program needs data from external sources, APIs enable the exchange of that data - such as your travel app updating ticket data or an e-commerce website requesting payment data.

App Integration
When two digital apps work together, such as gambling data germany HubSpot and LinkedIn, there is most likely an API involved.

Embedded content
To embed content that is not hosted by the same website, such as a YouTube video, a request is transmitted .

Internal systems APIs are not only used for external data exchange. Companies often segment their software infrastructure. The individual components then have to communicate with each other via APIs.

API - consume or offer yourself?
Users of APIs are called consumers . The APIs are provided by providers .

Companies become users when they want to connect to networks to market or sell products. In any case, sensible customer relationship management consumes APIs from other companies and service providers in order to collect data, generate leads or provide services.
Companies are considered providers if they provide or manage their own services (such as apps) and therefore generate and offer their own APIs as access to systems. Many APIs are offered free of charge.