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David/Jackie,<br />
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Thank you for your input.<br />
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Jackie, from the link you provided, what does control plan mean?<br />
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Context; &quot;Organizations need an identity control plane that strengthens their security and keeps their cloud apps safe from intruders.&quot;<br />
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I am sure that I have asked this question, before.
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I found the meaning of control plan here: <a href="https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/control-plane-and-data-plane" rel="ugc">https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/control-plane-and-data-plane</a>
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<em>This is why we’ve said, “Identity is the control plane.” It’s critical to establish who the user is as the core of trust for other transactions. If we aren’t sure who the user is, no other system access control or security matters.</em><br><em><br></em><div><a href="https://www.microsoft.com/security/blog/2018/12/17/zero-trust-part-1-identity-and-access-management/" rel="ugc">https://www.microsoft.com/security/blog/2018/12/17/zero-trust-part-1-identity-and-access-management/</a></div><br>I think you have misunderstood the term. The concept term is identity control plane, not just control plane and the concept behind is the zero trust model of Azure AD which was introduced in late 2018.
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I am reading up on Azure Security and I came upon the following words: pass-through authentication.<br><br>Below is what I found so far for a meaning: "Azure Active Directory (Azure AD) Pass-through Authentication allows your users to sign in to both on-premises and cloud-based applications using the same passwords."<br><br>From:&nbsp;<a href="https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-pta" rel="ugc">https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-pta</a><br><br>Does "pass-through authentication" have a different meaning than what I found from above?<br><br><br>I am referring to pass-through authentication,<br>taken from the context of: "<h3>Synchronize directories with Azure AD Connect" From&nbsp;<a href="https://docs.microsoft.com/en-us/learn/modules/azure-well-architected-security/3-identity-management" rel="ugc">https://docs.microsoft.com/en-us/learn/modules/azure-well-architected-security/3-identity-management</a></h3>
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I am reading up on Azure Security and I came upon the following words: pass-through authentication.
Below is what I found so far for a meaning: "Azure Active Directory (Azure AD) Pass-through Authentication allows your users to sign in to both on-premises and cloud-based applications using the same passwords."
From: 
https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-pta
Does "pass-through authentication" have a different meaning than what I found from above?
I am referring to pass-through authentication,
taken from the context of: "
Synchronize directories with Azure AD Connect" From 
https://docs.microsoft.com/en-us/learn/modules/azure-well-architected-security/3-identity-management

What is &quot;pass-through authentication?&quot;

Microsoft Azure is a cloud computing platform and infrastructure for building, deploying and managing applications and services through datacenters. It provides both platform-as-a-service (PaaS) and infrastructure-as-a-service (IaaS) services and supports many different programming languages, tools and frameworks, including both Microsoft-specific and third-party software and systems. Cloud Services is a PaaS environment and can be used to create scalable applications and services; there are specific software development kits (SDKs) provided by Microsoft for Python, Java, Node.js and .NET. Azure also has file and storage services, data management, analytics and DNS services.

What is &quot;pass-through authentication?&quot;

Synchronize directories with Azure AD Connect" From https://docs.microsoft.com/en-us/learn/modules/azure-well-architected-security/3-identity-management

What is "pass-through authentication?"