Preparing Trade and Development Bank for Dynamics 365 with Microsoft 365 Modernization

Trade and Development Bank (TDB) required a pragmatic modernization of its collaboration and security stack to support 700 users and to create a compliant foundation for future cloud applications. Awara IT delivered a Microsoft 365 tenant deployment, an Exchange Server 2019 upgrade with a hybrid Exchange topology, Teams calendar synchronization, and Entra ID (Plan 1) and Defender (Plan 2) security baselines to address operational continuity and regulatory requirements.

The result is a hardened, cloud-ready environment that reduces operational overhead, restores calendar and mail reliability, and raises the bank’s security posture. The engagement also positions TDB to adopt Dynamics 365 workloads in a controlled, compliant manner while maintaining integration with existing on-premises systems and monitoring processes.

Client / Industry / Country

Trade and Development Bank (TDB) is a commercial and investment bank operating in Mongolia. The project targeted the bank’s corporate IT estate serving approximately 700 users across retail and corporate banking operations, aiming to modernize core collaboration and security infrastructure while meeting domestic banking compliance requirements.

Business challenge

TDB was operating an aging on-prem Exchange estate and fragmented security controls that increased maintenance overhead and created synchronization issues between mail and collaboration tools. Users experienced calendar inconsistencies between Exchange and Teams, manual account provisioning processes, and limited multi-factor authentication adoption. These operational gaps created risk in daily banking workflows and constrained IT’s ability to scale services.

In addition, the bank needed to address stricter regulatory expectations for financial institutions in Mongolia: demonstrable access controls, stronger email security against phishing, and clear audit trails. TDB sought a measured cloud-first approach that improved availability and security while preserving necessary on-prem integrations and data residency considerations.

Why Dynamics 365 was selected

Although this engagement focused on Microsoft 365 and security modernization, the selection of Microsoft technologies was driven by the bank’s longer-term strategy to adopt tightly integrated business applications such as Dynamics 365. Microsoft 365, Entra ID, and Defender provide the identity, collaboration, and security foundation required by Dynamics 365 Finance, Supply Chain, or Customer Engagement workloads.

Awara IT recommended a conservative, staged implementation to reduce disruption: upgrade Exchange to 2019, create and configure a new Microsoft 365 tenant, implement hybrid Exchange for controlled mail coexistence, and deploy Entra ID and Defender security policies. This approach minimizes operational risk today while ensuring the estate meets Microsoft-supported architecture and compliance standards needed for future Dynamics 365 deployments.

Modules implemented

• Microsoft 365 tenant configuration and tenant security baseline
• Exchange Server 2019 upgrade and mailbox migration planning
• Hybrid Exchange configuration (Azure AD Connect and mail coexistence)
• Teams integration and calendar synchronization with Exchange
• Entra ID (Azure AD) Plan 1 configuration, including conditional access and SSO
• Microsoft Defender for Office 365 (Plan 2) deployment and anti-phishing policies
• M365 Security E5 policy configuration and security baseline implementation

Integrations

• Azure AD Connect for directory synchronization between on-prem AD and Entra ID
• Hybrid Exchange integration to maintain mailflow and calendar sync with Teams
• Defender alert forwarding to the bank’s security monitoring processes
• Conditional Access and SSO integration with existing corporate applications

Localization & compliance

Awara IT designed the deployment to respect Mongolian banking regulations and local data protection expectations. The implementation included scoped data retention and mailbox audit logging to satisfy local audit requirements, language support for administrative portals where applicable, and controls that map to the Bank of Mongolia’s reporting needs. Where data residency was a concern, Awara IT documented options and implemented policies to limit unnecessary data movement.

Security configurations were aligned with financial services controls: enforced MFA via Entra ID, role-based access controls for privileged accounts, and Defender policies tuned to the bank’s threat profile. All configurations and runbooks were handed over with documentation to support local compliance audits and ongoing governance.

Business value

The modernization project delivered measurable operational and security improvements: mail and calendar reliability increased, identity management became centralized, and anti-phishing protections reduced successful attacks. IT regained time previously spent on on-prem maintenance and manual user management, enabling the team to focus on higher-value initiatives. The stabilized environment also reduced business disruption risk for front-line banking operations.

Critically, the work has created a supported, compliant platform for the bank to adopt Dynamics 365 in future phases. With Entra ID, Defender, and Microsoft 365 configured according to Microsoft best practices and local compliance needs, TDB can onboard Dynamics 365 Finance or Customer Engagement with lower integration overhead and predictable security controls.