Top 10 Differences between Active Directory and Azure Active Directory

Active Directory and Azure Active Directory are Microsoft's identity platforms for managing user access and security. Active Directory is primarily focused on managing access to users on-premise infrastructure, while Azure Active Directory allows for manageable user access to users through secure and global identity and access management in the cloud, which provides better scalability, security, and greater operational efficiencies for modern digital businesses. 

Understanding Digital Identity in Modern IT Infrastructure 

The rapidly changing identities of digital enterprises have made them the new primary perimeter for security. As the cloud continues to grow in popularity, identity systems designed for many customers in today's cloud environments are running out of the ability to scale, as well as out of the ability to protect against attacks. As a result, organisations will have to rely on identity platforms that create to global technical entities (Microsoft Azure, Amazon Web Services, ISO, National Institute of Standards and Technology, and Microsoft, etc.) for identity and security technologies. 

These technical entities define identity globally, security, and compliance technology, and the implications for businesses that cannot reach the global identity and security technologies are significant. 

It is critical for our engineering team and all of our engineering organisation to be able to differentiate Active Directory from Azure Active Directory, and therefore be able to design a secure and scalable IT architecture for your organisation. 

What is Active Directory? 

Active Directory (AD) is a directory service that operates in-house for the administration of users, computers, and other assets found in a company’s computer network. Active Directory uses the following technologies: 

• 1. Domain Controllers 

• 2. Group Policy Objects (GPO) 

• 3. Lightweight Directory Access Protocol (LDAP) 

• 4. Kerberos authentication. 

Active Directory is predominantly used within internal office networks. 

What is Azure Active Directory? 

Microsoft Entra ID (formerly known as Azure Active Directory) is a cloud-based IdAM (Identity and Access Management) solution from Microsoft. 

The main functions of Microsoft Entra ID are: 

• 1. Secure access to cloud-based applications 

• 2. Single Sign-On (SSO) capabilities 

• 3. Multi-Factor Authentication (MFA) capabilities 

• 4. Conditional Access that provides granular access control based on predefined policies 

Microsoft Entra ID is architected for cloud-first / hybrid deployment scenarios. 

Top 10 Differences Between Active Directory and Azure Active Directory 

Industry Challenge: Why Traditional Active Directory is Not Enough 

Many businesses are confronted with the following issues: 

• 1. Growth of remote employees 

• 2. Utilising applications hosted in the cloud 

• 3. A rise in the threat of Cybersecurity issues 

• 4. Regulatory guidelines that include ISO 27001 

Research has shown that organisations that solely use On-Premises Active Directory will incur: 

• 1. The Cost of Operations is much greater 

• 2. The Risk of Security is much greater 

• 3. The Ability to scale will be significantly reduced 

Architecture Comparison: Traditional vs Modern Identity Solution 

Identity Architecture Comparison Table 

Our technical team has found that Azure AD aligns with the Zero Trust architecture recommended by NIST. 

Technical Implementation Roadmap 

The organisations will go through this roadmap for their implementation activities:  

Phase 1 - Assessment 

1. Review current Active Directory infrastructure. 

2. Define if their current environment is cloud-ready. 

Phase 2 - Hybrid Identity Implementation 

1. Implement Azure Active Directory Connect. 

2. Synchronise their accounts to Azure. 

Phase 3 - Cloud Authentication Implementation 

1. Enable Single Sign-On. 

2. Configure Multi-Factor Authentication. 

Phase 4 - Complete Cloud Identity Transformation 

1. Migrate applications to Azure Active Directory. 

2. Implement Conditional Access policies for their users. 

Security and Compliance Advantages of Azure AD 

There are many benefits of the Modern Workplace. These benefits include: 

• 1. Enterprise-grade security standards (ISO and NIST) 

• 2. Supporting Access Control 

• 3. Protecting Your Identity 

• 4. Understanding Threat Intelligence 

Our engineering implementation experience demonstrates that Azure AD reduces identity breaches significantly. 

Future-Proofing Your Business with Cloud Identity 

Cloud-based identity service providers offer: 

1. Abundance of capacity for expanding organisations 

2. Assistance with workforces who are working from anywhere 

3. Cost savings in information technology infrastructure 

4. Improved compliance readiness 

Microsoft Azure Active Directory readies users to connect to: 

1. Software as a Service (SaaS) applications 

2. Cloud-based platforms 

3. Enterprise-level applications 

Together, these things support today's Digital Infrastructure. 

Success Checklist: Active Directory to Azure AD Migration 

To head towards success, make sure you complete each item in this checklist: 

• 1. Assess Current Identity Infrastructure 

• 2. Identify Cloud Applications 

• 3. Implement Hybrid Identity 

• 4. Enable Multi-Factor Authentication for Each User 

• 5. Configure Conditional Access 

• 6. Train IT Staff 

• 7. Monitor Identity Security 

• 8. Plan to Phased Migrate to Newer Systems 

Why Businesses Are Moving to Azure Active Directory 

What's provided by Azure AD about engineering and architectural attributes: 

• 1. Higher Security 

• 2. Better Scalability 

• 3. Lower Ongoing Costs 

• 4. Cloud readiness 

Companies utilising Azure AD have indicated a higher level of security and increased operational efficiency within their environments, as well as across the organisation as a whole. 

Conclusion 

Traditional office-based networks will work with Active Directory, but Current enterprise organisations adopting cloud-based technology (including remote working and Zero Trust security) must implement Azure Active Directory.

"We would recommend migrating to Hybrid Identity and, in parallel, transform fully to a Cloud Identity." 

If you are in the process of transforming to Cloud Identity within your organisation, we have Cloud Identity Subject Matter Experts to assist you in designing and implementing a Secure Azure Active Directory Solution based on ISO and NIST standards. 

To speak with our subject matter experts, contact us for: 

• 1. Identity Assessment 

• 2. Migration Roadmap 

• 3. Security Implementation