Query Regarding Ai Project Client Used in Step05_AzureAiAgent_FileSearch? Agent Framework in C#

[lovedeepatsgit]

I want to use the feature to attach files while using Agents, and #10780 thanks to @sophialagerkranspandey that I got the reference of https://github.com/microsoft/semantic-kernel/blob/main/dotnet/samples/GettingStartedWithAgents/AzureAIAgent/Step05_AzureAIAgent_FileSearch.cs. But I as we can Clearly See that Step05_AzureAiAgent_FileSearch Class is derived from BaseAzureAgentTest which derived from BaseAgentsTest < AiProjectClient>, I have a confusion regarding what is this AiProjectClient, I have also used Azure Ai Foundry on there is also support of Agents (which are in preview), And in the AiProjectClient there is lot of mentioned about Uri of Foundary, and AiProjectClient is created By using AzureAiAgent Class's CreateAzureAiClient Method, and AzureAiAgent class is derived from KernelAgent which is from Agent.
So, by looking at the whole scenario I have few queries as below:

1. Why there is a need of Azure Ai Foundry through AiProjectClient specifically in the case of File Search because I have used SK's agents framework normally like for tools, and other functionalities never Ai Foundry is Used only used if LLM Models is deployed there. So, how in the case of File Search Azure Ai Foundry is Contributing?
2. What is the relationship between Azure Ai Foundry and Semantic Kernel Framework?
3. Is there any simpler demonstrations which I can prefer for file attachment with my agents or this one is only supported?
4. Is in future I can directly use agent created in SK in Azure Ai Foundry and vice versa?

Anyone who is interested and want to help please reply. I am happy to learn together with you.

[sophialagerkranspandey]

Tagging @crickman

[crickman]

Hi @lovedeepatsgit, thanks for your questions.

1. An AzureAIAgent is specifically based on a hosted agent definition that exists in the Azure AI Foundry via the Agent Service: https://learn.microsoft.com/azure/ai-services/agents/overview. The AIProjectClient is an artifact of the SDK used to interact with this Foundry Services: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/ai/Azure.AI.Projects. For the file-search tool, the foundry hosts a vector store that contains all of the desired files to be searched: https://learn.microsoft.com/azure/ai-services/agents/how-to/tools/file-search.
2. The AI Foundry hosts models and services that may be utilized by the Semantic Kernel SDK
3. You may use a memory-connector as a tool in conjunction with chat-completion or ChatCompletionAgent
4. You can currently use agents created in AI Foundry in SK. If you create an AzureAIAgent as part of using the SK SDK, it will exist in the Foundry

[lovedeepatsgit]

Thanks a Lot @crickman