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As written above it can be merged with other launchers or started as stand alonestandalone. This is up to the individual environment setup and deployment.
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Other than that - the developer portal is a stand alone standalone application that can run directly as is or be installed behind a gateway for example. If the Gateway logs the user in - the frontpage front page of the developer portal will not be shown, as the gateway will handle login and deliver an authenticated session to the developer portal.
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