Kasta is one of Ukraine’s leading e-commerce marketplaces, connecting thousands of merchants with millions of customers across a wide range of product categories. As the platform scaled rapidly in traffic, merchant volume and transaction throughput, Kasta faced a critical infrastructure challenge – the existing architecture could no longer support the pace of growth without risking stability, performance & revenue.

🚀 Challenge

Kasta’s growth ambitions were being constrained by infrastructure limitations that showed most acutely during high-demand periods. Promotional campaigns and seasonal peaks exposed gaps in resilience, deployment speed & operational efficiency.

Main problems:

  • Platform instability during 2–3x traffic spikes, causing degraded user experience and checkout performance
  • Infrastructure provisioning and deployment cycles measured in days, slowing time-to-market for new features and campaigns
  • High operational overhead from manual infrastructure management, monitoring and scaling
  • Long incident resolution times impacting revenue and customer trust
  • Difficulty onboarding and scaling thousands of third-party merchants without proportionally increasing operational complexity

🧩 Elcore's approach to problem solving

Elcore designed a cloud-native architecture for Kasta’s marketplace platform based on the AWS Well-Architected Framework, focusing on resilience, automation and operational excellence at scale.

Needs analysis – a thorough assessment of Kasta’s traffic patterns, merchant onboarding flows, peak load scenarios, deployment processes and observability gaps to define clear technical and business priorities.

Architecture design – development of a highly available, auto-scaling marketplace infrastructure on AWS capable of absorbing 2-3x demand spikes without manual intervention, with independent scaling of core services including storefront, checkout and merchant management.

Automation & CI/CD – implementation of fully automated infrastructure provisioning, deployment pipelines and scaling processes, reducing deployment time from days to hours and enabling faster, more frequent releases.

Observability & incident response – deployment of comprehensive monitoring, alerting and observability tooling to improve system visibility, accelerate incident detection and dramatically reduce MTTR.

📈 Achieved results for Kasta:

  • 99.95%+ platform uptime – core marketplace and checkout services maintained consistent availability even during peak demand periods
  • 2-3x traffic spikes handled without degradation – elastic infrastructure scales automatically to protect conversion rates and user experience during campaigns
  • Deployment time reduced from days to hours – faster release cycles enabling rapid delivery of new features and promotional campaigns
  • 30-40% reduction in operational overhead – automated infrastructure management freed engineering teams to focus on product and growth
  • MTTR reduced by up to 50% – improved observability and incident response efficiency minimised revenue impact of any issues
  • Sub-2-3 second page rendering – improved frontend performance driving higher conversion rates and reduced abandonment
  • Seamless merchant scaling – thousands of third-party merchants onboarded without proportional increase in operational complexity

 

“Scaling a marketplace means scaling everything at once – traffic, merchants, transactions & expectations. With Elcore and AWS we built an infrastructure that grows with us, handles demand peaks without breaking a sweat and gives our team the tools to move faster. That’s exactly what a marketplace at our stage needs,” – representative of Kasta.

Why did Kasta choose Elcore?

  • Proven expertise in high-traffic, multi-tenant marketplace architectures on AWS
  • End-to-end approach: from architecture design and migration to automation and ongoing optimisation
  • Deep focus on operational excellence – automation, observability and incident response built in from day one
  • Transparent cost modelling ensuring performance and scalability without unnecessary spend

🚀 Conclusions

Kasta’s partnership with Elcore demonstrates how the right cloud foundation transforms infrastructure from a growth constraint into a genuine competitive advantage. With a resilient, automated AWS environment in place, the team can now scale merchants, handle demand peaks and ship new features faster while keeping operational complexity firmly under control.

Ready to build infrastructure that scales with your ambitions?– Our team can help you evaluate how AWS can support your next stage of growth.

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