Engineering and Technology
| Open Access | Automated Compliance-Driven Patch Management and Security Hardening in Multi-Cloud Banking Infrastructure Using IaC and Python Orchestration
Ajay Devineni , Site Reliability Engineer, A Leading Digital Banking SaaS Platform, Atlanta, GA, USAAbstract
Managing operating system patch cycles across heterogeneous, multi-cloud environments in regulated financial services presents challenges that go well beyond what conventional vulnerability management frameworks address. This paper describes a practitioner-developed framework implemented at a major digital banking platform serving more than a dozen credit union clients across AWS, Azure, and Google Cloud Platform. The framework integrates Infrastructure as Code (IaC) through Terraform, Python-based orchestration scripts, AWS Systems Manager (SSM), and endpoint security tooling (CrowdStrike Falcon) to deliver fully automated, compliance-traceable patch cycles on a scheduled monthly cadence. Key outcomes include an 83% reduction in manual patching effort, a compliance posture improvement from 71% to 98.6% against SOC 2 Type II control objectives, elimination of post-patch P1/P2 production incidents from 4.2 per quarter to 0.6, and the automated generation and distribution of audit-ready reports that previously required eight hours of manual effort per cycle. The paper details the architecture, implementation approach, encountered failure modes, and quantitative operational results, with the goal of offering a transferable methodology for SRE teams operating under comparable regulatory and multi-tenancy constraints.
Keywords
patch management, Infrastructure as Code, Python orchestration, SOC 2 compliance, CrowdStrike, AWS SSM, multi-cloud security, SRE, banking infrastructure, DevSecOps.
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Copyright (c) 2023 Ajay Devineni
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