현재의 네트워크 환경은 급격히 변화하고 있다. 스마트폰의 급속한 보급과 데이터의 대용량화로 인해서 네트워크 트래픽이 급격히 증가하고 있다. 그리고, 소셜 네트워크 서비스, 클라우드 서비스 등 새로운 서비스가 등장하면서, 새로운 서비스에 유연하게 대응할 수 있는 네트워크에 대한 요구도 늘어나고 있다. 네트워크 환경의 이러한 변화에 대처할 수 있는 새로운 네트워크로 스마트 인터넷이 등장하였다. 스마트 인터넷은 네트워크 트래픽 등의 변화에 따라서 신속하게 자원을 할당, 재배치하고, 새로운 서비스가 등장했을 때 이를 잘 처리해 줄 수 있는 것이 특징이다. 본 고에서는 스마트 인터넷을 위한 요소 기술로써, 가상 스위칭, 오버레이 네트워크, 네트워크 기능 가상화, API 기반 네트워크에 관하여 연구 동향을 중심으로 알아본다.
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