Embedded map view (beta) Google API requirements

I note that when using Embedded map view (beta) version 1.0.7 component an API key field appears in the advanced tab of the build settings for iOS and also Android. It seems pre-filled with what I guess is a test API key (not sure who owns it.) The Android build configuration also includes a react-native-maps API key field in addition to google-maps API key field.

Google seem to offer lots of API options with various pricing depending upon usage. For example under dynamic maps they offer:

Maps Embed API
Maps SDK for Android
Maps SDK for iOS
Maps JavaScript API

My question is which API do I need (I assume dynamic maps) and which API components (listed above) get used in the Embedded map view (beta) for iOS and Android and therefore which should I be getting quoted for?

I hope someone can help with this.