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When Modernizing, Apply Architectural Principles to Build Resiliency for Critical Applications

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ksm 25.04.04

This IDC Perspective provides a comprehensive road map for CIOs to architect resilient IT environments by aligning technology investments with business goals while balancing cost and performance. In the modern digital era, resilience has become a cornerstone of effective IT strategy. Organizations face mounting challenges such as increasing complexity, cyberthreats, and evolving business demands.A key to resiliency is the importance of building systems that are manageable, resilient, and sustainable. Drawing inspiration from public cloud providers, strive for standardization and simplicity, as well as a limited set of well-architected solutions to reduce complexity while improving maintainability.A tiered hosting approach - silver, gold, and platinum - is introduced as a practical model to align application criticality with resilience requirements. These tiers guide organizations in allocating resources and designing systems to meet diverse business needs, from noncritical departmental systems to mission-critical platforms like real-time trading and core banking. Each tier emphasizes key considerations such as recovery time objectives (RTOs), recovery point objectives (RPOs), replication strategies, and failover mechanisms.For CIOs managing hybrid or on-premises environments, the importance of emulating public cloudlike practices - such as automation, modular architectures, and infrastructure as code (IaC) - is underscored. These strategies enable repeatable, reliable infrastructure deployments that reduce errors and foster agility.Key takeaways focus on five principles critical to resilient IT environments:Standardization and simplification to reduce complexityAdopting cloudlike automation for efficiency and agilityBuilding for scalability to ensure systems can grow with business needsEnhancing developer experience through streamlined workflows and DevOps practicesPrioritizing security with advanced features and robust governanceBy following these principles, CIOs can design IT environments that are adaptable to current challenges and future demands. A well-architected IT infrastructure becomes more than a support function - it evolves into a strategic enabler of organizational resilience and innovation.As Gerald Johnston, adjunct research advisor, IDC's IT Executive Programs (IEP), aptly states, "Resiliency is not just a goal; it is a competitive advantage in today's demanding digital economy."

Executive Snapshot

Situation Overview

  • Why Is Cloud Computing Attractive?
  • The Security Perspective

Advice for the Technology Buyer

  • Apply Design Principles to On-Premises and Private Cloud Hosting
    • Architectural Principles and Considerations
    • Hosting and Compute
    • Applications
    • Storage
    • Network
    • Operating Model
    • Practical Example

Learn More

  • Related Research
  • Synopsis
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