AB-100 Last-Minute Revision Cheat Sheet (Microsoft Agentic AI Business Solutions Architect)

Recently, I cleared the Microsoft Certified: Architecting Agentic AI Business Solutions (AB-100) exam.

While preparing, I ended up creating this one-page Architect’s Compass for my last-minute revision. Instead of memorizing every Microsoft service, I grouped similar services so I could quickly decide which one fits a business scenario.

I’m sharing it here in case it helps someone preparing for AB-100.

Get it here !

How to Read the Architect’s Compass

Don’t read it from left to right like a textbook. Start by identifying what the question is asking you to do, then jump to the matching section.

1. Cost & Business Value

Estimate → Pricing Calculator. Ownership → TCO Calculator. Actual Spend → Cost Management.

2. Knowledge Retrieval

Dataverse = Single Source of Truth. Azure AI Search = Search across multiple sources.

3. Prompt & Model Quality

Prompt Flow builds. Evaluation grades.

4. Microsoft 365

Entra ID = Identity. Microsoft Graph = Microsoft 365 data.

5. Security & Governance

Purview = Data governance. Azure Policy = Infrastructure governance.

6. Copilot Studio

Fallback = Unknown intent. Escalate = Human handoff.

7. Azure AI Foundry

Hub shares. Project builds. Endpoint serves.

8. Monitoring

Analytics = Business. Application Insights = Technical. Log Analytics = Cross-agent. Azure Monitor = Infrastructure.

Don’t Memorize. Recognize.

The biggest takeaway from my preparation was recognizing decision patterns instead of memorizing isolated features.

My Last-Minute Checklist

Dataverse = SSOT
Managed Solution = Production
Entra ID = Identity
Graph = Microsoft 365 Data
Purview = Data Governance
Hub → Project → Endpoint
Pricing vs TCO vs Cost Management
Fallback ≠ Escalate

Hope it helps..

ILMerge / Dependent Assemblies in Plugin – System.IO.FileNotFoundException: Could not load file or assembly ‘System.Memory.Data’ – Dynamics 365 / Dataverse

Recently in one of our Plugins, which was using Azure.Storage.Blobs and Azure.Storage.Common libraries to move attachments from notes to Azure Blob Storage suddenly started throwing the below exception. The Plugin had been working fine and had been deployed long back to the production environment.

System.TypeInitializationException: The type initializer for ‘Azure.Response’ threw an exception. —> System.IO.FileNotFoundException: Could not load file or assembly ‘System.Memory.Data, Version=1.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51’ or one of its dependencies. The system cannot find the file specified.

We raised the Microsoft Support for it and were informed that the reason for this was there was a platform update over that particular weekend to stop loading the “System.Memory.Data” assembly on the plugin server. And as we hadn’t included that assembly in our package (ILMerge), we started getting the exception.

Also as per Microsoft Docs

So the quick fix at that time was to include (set Copy Local as True) for that System.Memory.Data along with Azure assemblies.

Also now we can look into using Plugin Package to package the dependent assemblies.

Hope it helps..

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Implementing No Code Dynamics 365 Service Bus Listener using Logic Apps

Implementing No Code Dynamics 365 Service Bus Listener using Logic Apps

How to – Access Dataverse environment storage using SAS Token

We can access our environment’s storage using a SAS token.

Download – Azure Storage Explorer – https://azure.microsoft.com/features/storage-explorer/#overview

Select Connect to Azure resources option

Select ADLS Gen2 container or directory for the Azure storage type.

Select the Shared access signature URL for the connection

To get the SAS URL – https://[ContainerURL]/CDS?[SASToken],

we need ContainerURL and SASToken.

To get Container URL use the below link –

ContainerURL = <a href="https:///api/data/v9.1/datalakefolders”>https://<EnvironmentURL>/api/data/v9.1/datalakefolders

In our case – https://mycrm2022.crm.dynamics.com/api/data/v9.1/datalakefolders

The containerendpoint = https://aeth2b4c5907361d483c9641.dfs.core.windows.net/aeth-b986098f-1315-45cc-b8e6-61c5a1a1631a

Copy the value of containerendpoint (ContainerURL)

Navigate to the below URL by replacing the value of the Environment URL and Container URL

<a href="https:///api/data/v9.1/RetrieveAnalyticsStoreAccess(Url=@a,ResourceType=’Folder’,Permissions=’Read,List’)?@a=’/CDS”>https://<EnvironmentURL>/api/data/v9.1/RetrieveAnalyticsStoreAccess(Url=@a,ResourceType=’Folder’,Permissions=’Read,List’)?@a='<ContainerURL>/CDS’

i.e.

https://mycrm2022.crm.dynamics.com/api/data/v9.1/RetrieveAnalyticsStoreAccess(Url=@a,ResourceType=’Folder’,Permissions=’Read,List’)?@a=%27https://aeth2b4c5907361d483c9641.dfs.core.windows.net/aeth-b986098f-1315-45cc-b8e6-61c5a1a1631a/CDS%27

to get the SAS token (the SAS Token will expire after 1 hour)

Construct the SAS URL which we will use in the Azure Explorer’s connection info <a href="https:///CDS?https://<ContainerURL>/CDS?<SASToken>

https://aeth2b4c5907361d483c9641.dfs.core.windows.net/aeth-b986098f-1315-45cc-b8e6-61c5a1a1631a/CDS?skoid=3c1e8701-292f-478f-8f42-df7e9cc692c9&sktid=975f013f-7f24-47e8-a7d3-abc4752bf346&skt=2022-11-04T19%3A02%3A44Z&ske=2022-11-04T20%3A18%3A44Z&sks=b&skv=2020-08-04&sv=2020-08-04&se=2022-11-04T20%3A08%3A44Z&sr=d&sp=rl&sdd=1&sig=kKHHJLbb4gjAtTiQCbiuwQ8QrInY33zGEY1FvpxCLK%03D0

Now we have access to the storage

Here we have opened the contact folder just as an example

We only have read-only access, any other access like delete, rename, upload, etc. will fail

Get all the details here – https://learn.microsoft.com/en-us/power-platform/admin/storage-sas-token

Hope it helps..

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How to – quickly find Tenant Id https://www.whatismytenantid.com/

Recently we had to find the tenant id, usually, we will log in to Azure Portal and within Azure Active Directory we will get the tenant id.

However, in this case, we only had the user’s email address.

So we had https://www.whatismytenantid.com/ to help us here.

Just enter the domain name, and click on Find my tenant ID.

The result –

The corresponding PowerShell script – https://craigporteous.com/azure-tenant-id-powershell/

Hope it helps..

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Can’t delete billing profile. This is the only billing profile in the billing account- Azure (Trial)

Recently our Azure Subscription using free credit had expired and we wanted to remove the card details associated with the billing.

If we try to Detach it (and if the card is being used as the default payment), it will give us the below message

Cost Management >> Payment Methods > > Detach

“There are active or disabled Azure subscriptions on this billing profile. To detach this payment method, cancel and then delete all such subscriptions.”

And if we trying to delete the billing profile

Cost Management >> Billing profiles

We would get the below message

So first we need to delete the subscription here.

Now again we can only delete the free trial subscription after 3 days of canceling it. So we would have to try deleting the subscription after 3 days.

Trying after 3 days,

will give us the option to delete the subscription

But as we have the resources associated we will have to delete the resources first.

Navigate to All resources and delete the resources first.

After deleting the resources, deleting the subscription will be successful

Let us now try to detach the card again.

This time the Azure Subscription existing message was gone as we had deleted it, however, we were still not able to detach and it was asking to wait until the end of the billing period.

Instead of waiting till the end of the billing period – next we tried the below option

https://docs.microsoft.com/en-us/azure/cost-management-billing/manage/cancel-azure-subscription#how-do-i-delete-my-azure-account

i.e. Deleting the Azure AD Account. (through another admin user’s account)

After successful delete, we can see all the options disabled.

So basically the fastest way to remove your personal information from the Azure Free Trial is to cancel the subscription, delete it and then DELETE the account/user.

Hope it helps..

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