Rest Api Vs Sdk

There must be some software developers here

I'm studying for a certification that uses C# or Python to implement a solution.

It should how to use REST API (i.e. make HTTP request, get JSON response) and SDK (install the service and call it)

They say REST API simply allow you to call the service, whereas SDK allows you to customize the service. When I trace the code, I cannot wrap this around my head because

1. REST API is more lines of code
2. SDK seems streamlined

The Instructors could not provide satisfactory explanation (they say get minimum passing in cert exam, and you are good to go)

This is driving me bonkers. Google doesn't help either :-(

 

Ok I shall search for link

 

Here is link to code in Python that uses REST API, AI-102-AIEngineer/rest-client.py at master · MicrosoftLearning/AI-102-AIEngineer

Here is link to code in Python that uses SDK, AI-102-AIEngineer/sdk-client.py at master · MicrosoftLearning/AI-102-AIEngineer


Big difference is in how GetLanguage() is implemented

When using REST API, GetLanguage() does following
1. # Construct the JSON request body (a collection of documents, each with an ID and text)
2. # Let's take a look at the JSON we'll send to the service
3. # Make an HTTP request to the REST interface
4. # Add the authentication key to the request header
5. # Use the Text Analytics language API
6. # Send the request
7. # If the call was successful, get the response

When using SDK, GetLanguage() does following
1. # Create client using endpoint and key
2. # Call the service to get the detected language

 

It seems I do more coding to use the telephone line than I do to import SDK packages. Maybe I haven't used both methods enough