Designing Cloud Backend Systems for Mobile Applications: Patterns of Scalability, Fault Tolerance, and Observability

Ilia Titovskii

Citation: Ilia Titovskii, "Designing Cloud Backend Systems for Mobile Applications: Patterns of Scalability, Fault Tolerance, and Observability", Universal Library of Business and Economics, Volume 02, Issue 02.

Copyright: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The evolution of mobile products leads to increased workload, geographical distribution of users, and complex requirements for security, availability, and speed of change delivery. In a cloud environment, the backend for mobile applications must ensure scalability without degrading the user experience, resilience to partial failures, and measurable quality control through observability. This article examines application patterns in cloud backend architecture: edge layer (CDN/WAF/API gateway), stateless services with autoscaling, caching and data management strategies, asynchronous processing via queues and events, and the design of SLOs and disaster recovery (DR) mechanisms. It is shown that increasing target availability levels leads to a nonlinear increase in cost and complexity, so engineering decisions should be based on a cascade of metrics (user scenarios ? SLOs ? engineering signals) and managed tradeoffs.


Keywords: Cloud Architecture; Backend; Mobile Applications; Scaling; Fault Tolerance; Autoscaling; Caching; Queues; Event-Driven Architecture; SLO; Observability; Disaster Recovery.

Download doi https://doi.org/10.70315/uloap.ulbec.2025.0202017