Establishing a production-ready cloud foundation for Digital Healthcare

About the client

The client is a social business enterprise focused on delivering technology-enabled services across Bangladesh. As part of its Digital Healthcare Solutions program, the organization developed a mobile application to provide healthcare-related services to end users. The application required a dependable technical foundation capable of supporting consistent performance, secure data handling, real-time communication, and future growth.

The challenge

The application needed more than basic hosting. The client required an architecture that could handle variable user demand, maintain high availability, and integrate specialized services for audio and video interaction. At the same time, the organization sought to minimize the internal operational burden associated with cloud management, developer account administration, and third-party service coordination.

Key challenges

• AWS services that could scale automatically while remaining cost-aware during periods of lower demand
• A highly available database capable of supporting both transactional and read-intensive workloads
• Secure networking to protect internal resources while allowing controlled external connectivity
• Administrative complexity of creating and maintaining official developer accounts on Google Play and Apple App Store
• Integration of a specialized real-time communication service for audio and video calling
• Ongoing operational responsibility for monitoring, maintenance, and optimization

Solution

Express Systems Limited designed, implemented, and now manages a complete production-oriented AWS environment together with all associated enabling services.

Core AWS services

• Web Server Layer: Linux-based instances deployed in Auto Scaling groups (min 1 – max 4 instances) to match demand.
• Load Balancing: Four Application Load Balancers distributing traffic, designed for approximately 500 new connections/sec and approximately 2,000 requests/sec.
• Database Layer: Amazon Aurora (MySQL-compatible) in Multi-AZ configuration with separate read and write nodes.
• Networking: NAT Gateway, VPC endpoints, Internet Gateway, and flexible inter-regional data transfer pathways.
• Object Storage: Amazon S3 Standard storage class with expandable capacity as needed.

Enabling services

• Developer Accounts: Created and maintain Google Play and Apple App Store developer accounts, including annual Apple subscription renewal.
• Real-Time Communication: Established Agora.io account to power in-app audio and video calling features.
• Digital Assets: Arranged Shutterstock subscription for professional images, vectors, and illustrations, plus support for other tools and licenses.

Managed services model

• Initial setup and detailed configuration of all AWS resources
• Continuous monitoring of AWS resource health and performance
• Routine maintenance, timely updates, and performance optimization
• 24/7 operational support aligned with agreed service expectations
• Administrative oversight of third-party accounts and subscriptions with transparent usage-based reporting

Results & value

Upon completion of the primary implementation, the client possessed a fully configured, production-ready AWS environment supported by the necessary developer accounts, real-time communication capabilities, and digital asset resources. Express Systems Limited continues to provide managed operational support.

• Operational Reliability: Multi-AZ database, auto-scaling compute, and properly dimensioned load balancing maintain availability under variable load.
• Reduced Internal Overhead: AWS Cloud management, developer accounts, real-time services, and digital assets consolidated under one partner.
• Simplified Coordination: A single accountable organization eliminated multi-vendor complexity.
• Built-in Scalability: Auto-scaling groups, flexible Aurora scaling, and expandable S3 provide a clear growth path without architectural redesign.
• Focus on Core Objectives: Client teams can concentrate on application features, user experience, and the broader Digital Healthcare Solutions mission.

By addressing AWS architecture design, third-party account management, specialized service integration, and ongoing operations within a single engagement, Express Systems Limited delivered more than a set of technical resources. It established a coherent operating foundation that supports both current needs and future development of the client’s Digital Healthcare Solutions application.

Prepared by Express Systems Limited · Version 1.0 · September 2026