A service$-$oriented architecture is one option to consider when thinking about architecting your application. Within this context, which of the following statements is true?

Many of the services that make up a service$-$oriented architecture can be offered through the Internet, and they are called Web widgets.

In a service$-$oriented architecture, each component represents a service with a very well$-$defined implementation.

Your program may implement any functionality by integrating the code of that service with the existing code for the application.

Your program may implement any functionality by searching for a service that is available and connect to it via its interface.