Difference between APIs / SDKs and their purpose

Hello!

I have a running vSphere environment and I am a beginner with the vSphere APIs and SDKs in c#. So I started reading with getting started with vSphere SDK - Update for 4.1 SDK release and downloaded the SDK and API packages.

First of all, I got PowerCLI with vSphere SDK for .NET and read the vSphere SDK for .NET Developer's guide. Then, I downloaded the package vSphere web services SDK, samples and DLLs compiled and am reading in the programming guide.

But the bird's-eye view that API/SDK is best for what and how to use it is still missing.

Do I have reason to assume, as vSphere SDK both vSphere Web Services SDK depend on vSphere API that is available on each ESX host?

I found the vSphere API reference , but it seems to me that Web Services SDK and vSphere SDK samples, using the same objects and vSphere API methods directly.

The only difference I found is, that examples of web services use AppUtil who still uses the vSphere API but vSphere SDK isn't. Is - this right and where is the advantage by using one of the software development instead of vSphere API kits? When using web services SDK, can I use the AppUtil of samples?

So you see, I'm a bit confused by the possibilities and usage. In particular the difference between vSphere SDK and vSphere Web Services SDK is not clear for me.

Can you help me by summarizing briefly the differences and the objectives of these packages? Or is it a good document which deals with this subject?

Thanks and greetings

Patrick

Hello

You are right in saying that the vSphere SDK and vSphere Web Services SDK depend on vSphere API.

Just to clear your confusion, both vSphere SDK and vSphere Web Services SDK are logically the same, there is no difference between them.

vSphere SDK using Web Services as the underlying technology/channel to manage any virtual infrastructure. This management is achieved using vSphere API, formerly called VI APIs, which are exposed as web services, that run on each ESX system.

For a better understanding of vSphere Web Services SDK, see the file Readme html doc comes with the SDK package.

I hope that this will help to clear your confusion!

Thank you.

Angela

Tags: VMware

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