Designing SLO-Driven Cloud Architectures: A Framework for Balancing Reliability, Performance, and Cost in Enterprise Systems

Abstract

As enterprises increasingly migrate to cloudnative environments, ensuring system reliability while maintaining cost efficiency has emerged as a critical challenge. Traditional approaches to reliability often result in over-provisioned infrastructure and excessive operational costs due to the absence of clearly defined service-level targets. This paper proposes a structured framework for designing Service Level Objective (SLO)-driven cloud architectures, integrating principles from Site Reliability Engineering (SRE), FinOps, and enterprise architecture governance. The framework enables organizations to align system reliability with business requirements while optimizing resource utilization. Drawing from practical enterprise implementations, this study demonstrates how SLO-driven architectures can reduce infrastructure inefficiencies, improve system resilience, and enable data-driven decisionmaking. The findings suggest that adopting SLO-based design principles can lead to improved cost-performance balance and sustainable cloud operations.

Keywords: Cloud Architecture, SRE, SLO, FinOps, Reliability Engineering, Cloud Cost Optimization, Enterprise Systems