SECURE MULTI-CLOUD ARCHITECTURE PATTERNS FOR HIGH-AVAILABILITY FINANCIAL APPLICATIONS

Abstract

This study discusses secure multi-cloud architecture patterns, with the intention of 
providing high availability in financial applications. As financial institutions have been relying 
more on cloud services, it has become necessary to ensure that these services are resilient, 
secure, and compliant with regulations. The study assumes an explanatory qualitative and 
quantitative research design that causes secondary data which is corroborated by authentic 
literature and UK-based case-studies. It discusses noteworthy and multi-cloud trends, such as, 
cloud, native design, distributed storage, and cross-cloud orchestration, and replicates their 
success in overcoming the concentration risk and service outages. The results indicate that even 
though multi-cloud architectures can offer high levels of both availability and fault-tolerance, 
they also pose some issues to trust administration, data coherence, governance, and complexity. 
The research finds that the adoption of effective security measures, robust governance 
mechanisms and explicit data strategies can ensure a successful implementation of the solution 
to strike a balance between resilience and performance and compliance in financial settings. 
Index Terms- Multi-Cloud Architecture, Financial Applications, orchestration, Recovery Time 
Objective (RTO), Recovery Point Objective (RPO), cloud resource orchestration, cloud 
brokerage, inter-clouds, cloud interoperability/portability

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