Establishes Zero Trust Security Foundation with Microsoft 365 to Enable Secure Tenant Separation and Operational Independence
Enabling secure tenant separation from Vodafone global infrastructure through a fully governed Zero Trust security architecture powered by Microsoft Entra ID, Intune, Microsoft Purview, and Microsoft Defender XDR.
A Mandatory Security Transformation Before Tenant Exit
Telecel Ghana required a complete security overhaul as a prerequisite to separating from the Vodafone global Microsoft 365 tenant. Vodafone's migration governance framework mandated a fully operational, enterprise-grade security posture before any data migration or tenant exit could be approved.
- 1Complete security transformation required before tenant separation
- 2Vodafone governance mandated enterprise-grade Zero Trust posture
- 3No migration approval without fully operational security controls
A Fully Governed Zero Trust Security Architecture
Reliance Infosystems designed and deployed a comprehensive Zero Trust security architecture across identity, endpoint, data, and threat protection layers — ensuring Telecel Ghana could operate as an independent and sovereign Microsoft 365 tenant.
- 1Zero Trust identity controls via Microsoft Entra ID and PIM
- 2100% endpoint enrollment and compliance with Microsoft Intune
- 3Enterprise data governance with Microsoft Purview sensitivity labeling
100%
MFA Enforcement
100%
Endpoints Enrolled
Zero Trust
Foundation Established
6
Microsoft Technologies
CASE STUDY overview
Microsoft 365 Security and Zero Trust Architecture
Industry
Telecommunications
Country
Ghana
Nomination Category
Data Security & Governance | Security
Telecel Ghana Limited required a complete security transformation as a prerequisite to separating from the Vodafone global Microsoft 365 tenant following its rebranding and acquisition transition in 2024. The Vodafone migration governance framework mandated that Telecel’s new tenant must demonstrate a fully operational, enterprise-grade security posture before any data migration or tenant exit could be approved.
Reliance Infosystems designed and deployed a comprehensive Zero Trust security architecture across identity, endpoint, data, and threat protection layers, ensuring Telecel Ghana could operate as an independent and sovereign Microsoft 365 tenant.
The solution established a governed security baseline across identity access control, endpoint compliance, information protection, and centralized threat monitoring, enabling Vodafone’s migration sign-off and unlocking Telecel’s operational independence.
"Together, these technologies established a fully governed Zero Trust foundation that enabled secure tenant separation and operational independence."
How Microsoft Technologies Enabled the Outcome · Reliance Infosystems Reliance Infosystems <
Zero Trust Capabilities Enabling Secure Tenant Separation
Microsoft Entra ID Conditional Access policies enforced MFA across all users and administrators, implemented risk-based sign-in protection, and restricted access based on device compliance and location context. Privileged Identity Management eliminated standing admin access and enforced just-in-time role activation.
Microsoft Intune onboarded corporate endpoints into cloud-native device management, enforced compliance policies aligned to CIS benchmarks, and enabled secure device posture validation for Conditional Access decisions. Microsoft Defender for Endpoint provided real-time endpoint detection, attack surface reduction, and vulnerability management.
Microsoft Purview introduced Telecel Ghana's first enterprise-wide sensitivity labeling framework, enabling classification of Public, Internal, Confidential, and Highly Confidential data. Data Loss Prevention policies were deployed across Exchange, Teams, SharePoint, OneDrive, and endpoints to prevent unauthorized data exfiltration.
Microsoft Defender for Office 365 and Microsoft Sentinel provided centralized threat detection across email, collaboration, identity, and endpoint signals. Safe Links, Safe Attachments, and anti-phishing policies reduced exposure to advanced email-based threats.
Enterprise Security Outcomes Enabled by Microsoft Technologies
01
Secure Tenant Independence
Telecel Ghana successfully met Vodafone's security exit requirements, enabling formal approval for tenant separation and establishing full operational independence from the global Vodafone Microsoft 365 environment.
02
Identity Protection at Scale
100% MFA enforcement across all users and administrators eliminated password-only authentication risks and significantly reduced high-risk sign-in attempts.
03
Endpoint Governance Visibility
100% of corporate endpoints were enrolled in Microsoft Intune, enabling real-time compliance visibility, centralized device management, and enforcement of secure configuration baselines.
04
Data Protection and Exfiltration Control
Microsoft Purview DLP policies actively monitored and blocked unauthorized movement of sensitive data across email, Teams, SharePoint, and endpoint channels.
05
Centralized Security Monitoring
Microsoft Defender XDR and Microsoft Sentinel enabled unified visibility across identity, endpoint, and collaboration workloads, improving detection and response capabilities.
Business Impact
The engagement delivered measurable transformation across security, compliance, and operational independence.
100%
MFA Enforcement
100%
Endpoints Enrolled
Zero Trust
Foundation Established
6
Microsoft Technologies
Approach and Delivery Methodology
Reliance Infosystems executed a structured security-gated migration approach aligned to Vodafone's contractual exit requirements and Microsoft Zero Trust principles.
01
Secure-by-Design Assessment
Full tenant security baseline assessment
Microsoft Security Benchmark and NIST CSF alignment
Gap analysis across identity, endpoint, data, and threat protection
Dependency mapping for staged implementation
02
Zero Trust Implementation
Deployment of Entra ID Conditional Access and MFA
Intune device enrollment via Hybrid Join
Microsoft Defender for Endpoint onboarding and ASR policies endpoint, data, and threat protection
Microsoft Purview sensitivity labeling and DLP implementation
Microsoft Defender for Office 365 configuration
Microsoft Sentinel integration for centralized monitoring
03
Validation and Migration Readiness
Pilot rollout across user groups and devices
Policy tuning and enforcement validation
Security control verification for migration sign-off
Operational readiness confirmation with Vodafone governance team
Microsoft Technologies Used
Microsoft Entra ID (Conditional Access, Identity Protection, PIM)
Microsoft Intune (Endpoint Management and Compliance)
Microsoft Defender for Endpoint
Microsoft Defender for Office 365
Microsoft Purview (Information Protection, DLP, Audit)
Microsoft Sentinel
How Microsoft Technologies Enabled the Outcome
01
Microsoft Entra ID
Microsoft Entra ID enabled secure identity governance by enforcing MFA, Conditional Access, and privileged access controls, eliminating reliance on password-only authentication.
02
Microsoft Intune
Microsoft Intune enabled centralized endpoint management and compliance enforcement, providing real-time visibility into device security posture.
03
Microsoft Purview
Microsoft Purview enabled structured data governance through sensitivity labeling and DLP policies, ensuring protection of sensitive corporate information across collaboration platforms.
04
Microsoft Defender
Microsoft Defender XDR enabled unified threat visibility across identity, endpoint, and email systems, improving detection and response capabilities.
05
Zero Trust foundation
Together, these technologies established a fully governed Zero Trust foundation that enabled secure tenant separation and operational independence.
Partner Value and Expertise
Reliance Infosystems delivered deep expertise in Microsoft Zero Trust architecture design, security-gated migration execution, and enterprise-scale Microsoft 365 security deployment.
Key strengths included:
1
Security-first tenant migration architecture
2
Integration of identity, endpoint, and data protection layers
3
Regulatory-aligned security design for telecom environments
4
Microsoft Defender XDR and Purview ecosystem integration
5
Enable secure AI adoption through Microsoft 365 Copilot
6
Structured deployment aligned to Microsoft Cybersecurity Reference Architecture
Winner Summary
Reliance Infosystems enabled Telecel Ghana’s secure separation from Vodafone’s global Microsoft 365 tenant by implementing a Zero Trust security architecture using Microsoft Entra ID, Intune, Purview, and Defender XDR. The solution established identity, endpoint, and data governance controls, enabling formal migration approval and delivering full operational independence with enterprise-grade security.
