Azure sentiment analysis with Twitter. This workflow uses KNIME's Twitter nodes to perform a Twitter search and submit this to Azure Cognitive Services API via the POST Request node. To use this with your own Twitter and Azure account you need to add your credentials to the Twitter API connector and modify the POST request node with; 1. Your Azure Cognitive Services End Point URL. 2. Add your API key to the Ocp-Apim-Subscription-Key header under the request header tab.