We've selected our favorite tips and tricks created byMichael Crump and are delivering fresh technical content on Azure all April! Miss a day (or more)?Catch up with the series.

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I recently took a look at Text Analysis that was introduced with Cognitive Services and is now inside the Azure portal. If you open the Azure portal and look forAI and Machine Learning then you'll see the following:

Let's giveText Analysis a spin. Open the blade and fill out the following info. Be sure to select theFree tier (F0) as shown below:

SelectKeys and copy the value of Key 1.

We'll usePostman to test. Go ahead and download it if you haven't already and once complete you'll use one of the following endpoints depending on what you want to use.

https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/sentimenthttps://westus.api.cognitive.microsoft.com/text/analytics/v2.0/keyPhraseshttps://westus.api.cognitive.microsoft.com/text/analytics/v2.0/languages

We'll use thekeyPhrases endpoint for learning purposes.

What are Key Phrases? They automatically extract key phrases to quickly identify the main points.

Copy thehttps://westus.api.cognitive.microsoft.com/text/analytics/v2.0/keyPhrases url into Postman and set the following three header properties:

• Ocp-Apim-Subscription-Key = should be your Key 1 (from our discussion earlier).
• Content-Type = Set it to application/json.
• Accept = Set it to application/json.

Your screen should look like the following:

Now switch over toBody, thenRaw and post the following JSON (from some of my recent tweets):

{"documents":[{"language":"en","id":"1","text":"Top 10 .NET Development Tweets that Broke the Web in 2017 - http://mcrump.me/2ot58Co  #dotnet"},{"language":"en","id":"2","text":"Setting up a managed container cluster with AKS and Kubernetes in the #Azure Cloud running .NET Core in minutes - http://mcrump.me/2op9mek  #dotnet"}]}

Now pressSend and it will return key phrases from my tweets.

{"documents":[{"keyPhrases":["Web",".NET Development Tweets","dotnet"],"id":"1"},{"keyPhrases":["Kubernetes","Azure Cloud","minutes -","AKS",".NET Core"],"id":"2"}],"errors":[]}

Want more Cognitive Services? Check out ourquickstarts and tutorials!

We'll be posting articles every day in April, so stay tuned or jump ahead and check out more tips and tricksnow.