API calls is actually being sent to your aws resources when you make configuration changes in the gui management console.
The technique through which one program communicates with another program is known as an interface for application development (API). They communicate using API calls as the media.
An informational request for an API to offer a service or detail would be known as an API call or request. Today, an API is integrated into almost each web application, so API requests are constantly taking place in the background. For the information or service it requires, one program might "call" another application. This saves time as well as effort for developers who would otherwise have to create API-integrable application code.
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