About
Category
Fintech/Cloud ,
Services
Cloud infrastructure migration , Scalability optimization with AWS , Traffic load balancing & performance tuning ,
A leading flagship Payment System Operator(PSO) from a renowned construction firm in Bangladesh handles large-scale financial transactions for its users. It supports high-volume payment processing during national events and high-traffic periods.
In 2025, they encountered a challenge where they were tasked to support payment services during two of the most high-profile national events:
- DITF (Dhaka International Trade Fair) – An annual event that attracts millions of visitors and generates a massive volume of transactions.
- BPL (Bangladesh Premier League) – A nationwide cricket league with significant viewership and transaction spikes during matches.
They needed a scalable, secure solution that could handle rising transactions and security risks during such large events. Since their on-premise servers risked being overwhelmed, we developed a custom AWS infrastructure, migrating their on-premise setup to a cloud environment that provided:
- Auto-scaling to handle transaction spikes.
- Better bandwidth for seamless payment processing.
- Data residency and security with AWS Outposts rack integration.
Additionally, we also synchronized their on-premise infrastructure with AWS, creating a hybrid system that guaranteed performance, security, and compliance in one go. Our solutions helped them achieve a cashless, national-scale transaction system with resilient infrastructure on the AWS cloud, secure against potential threats.
Services
- Cloud infrastructure migration.
- Security enhancement (WAF & DDoS Protection).
- Scalability optimization with AWS.
- Traffic load balancing & performance tuning.
The Challenges
Network backbone limitations
The client’s existing infrastructure supported limited bandwidth, and it was already operating at full capacity under normal conditions.
The projected traffic surges during high-profile events like DITF and BPL indicated a peak requirement for a larger bandwidth.
Scaling the network to large bandwidth required large capital expenditure, hardware upgrades, and vendor coordination, making it an impractical short-term solution.
Security risks
Limitations to firewall & physical access risks made the data vulnerable to cyber threats and potential sabotage.
Given the high-profile nature of DITF and BPL, the client’s payment platform was a prime target for cyberattacks, including service disruptions and potential financial losses.
Infrastructure constraints
Upgrading the hardware required significant downtime, which was not feasible during live events that demanded uninterrupted transactions.
The Solution
Elastic scalability
The AWS cloud environment enabled auto-scaling, allowing the payment platform to handle sudden spikes in with scaled server without manual intervention.
Global redundancy & failover protection
Secure VPN connections were established to ensure seamless data transmission with banking partners.
Key features
- Scalable cloud infrastructure: AWS auto-scaling offers on-demand capacity expansion, preventing lagging or system downfall.
- Enterprise-grade security: Integrated Cloudflare WAF & AWS Shield protect against cyberattacks and data breaches.
- Seamless performance optimization: Traffic balancing & caching mechanisms improved the transaction speeds.
- Zero downtime migration: AWS migration was executed without disrupting real-time payment processing.
Results
- Successfully handled 3+ Gbps peak traffic without any downtime.
- Achieved 99.99% uptime during the DITF & BPL events
- Reduced operational costs by eliminating the need for costly hardware upgrades.
- Enhanced security with AWS-native WAF & DDoS protection, reducing cyberattack risks.
- Improved end-user experience with faster transaction speeds and optimized performance.
- Reduced operational costs and provided continuous system reliability with zero physical maintenance.
Prior vs Post Migration
| Metric | Before migration | After migration |
|---|---|---|
| Network Capacity | 1 Gbps | 10+ Gbps (scalable) |
| Peak Traffic Handling | 30% of expected load | 100% of expected load |
| DDoS Protection | Limited | AWS Shield protection |
| Uptime | 99.5% | 99.99% |
Tech stacks we used
Compute & Scaling
AWS EC2 & Auto Scaling
Content Delivery
AWS CloudFront
Security & Protection
AWS WAF & AWS Shield
Search & Analytics
Elastic Cloud
Caching & Performance
ElastiCache
Managed Database
MongoDB Atlas
