Application Portfolio Management (APM) Best Practices

Overview

Cloud readiness is not a binary attribute and is not uniformly distributed across the portfolio. Applications exist on a spectrum from fully cloud-ready to inherently on-premises, with a continuum of applications in between that could be migrated with varying degrees of architectural work, integration change, and operational adjustment. Without a systematic cloud readiness assessment framework applied consistently, cloud migration planning is built on aspirations rather than evidence - and migration cost and complexity are routinely underestimated before commitments are made.

Best Practice

Conduct a cloud readiness assessment for every on-premises application being considered for cloud migration, addressing five dimensions. Architectural readiness: is the application stateless or can it be made stateless; is it containerizable; does it rely on shared file systems or infrastructure patterns that complicate cloud deployment? Infrastructure dependencies: does the application depend on specific on-premises hardware, network configurations, or local data stores difficult to replicate in cloud? Data and compliance constraints: are there data residency, regulatory, or sovereignty requirements that restrict cloud deployment options? Performance requirements: are there latency or throughput requirements that cloud deployment may not meet in its initial configuration? Integration complexity: how many integrations does the application participate in and how complex will adapting those integrations to cloud-based deployment be?

Benefit(s)

Cloud readiness assessment produces migration plans grounded in the actual characteristics of the applications being migrated. Migration costs are estimated more accurately because the architectural and operational work required is understood before commitments are made. Migration sequencing is informed by readiness: genuinely ready applications migrate first, generating early benefits and operational experience that informs more complex migrations that follow. The organization avoids the most common and costly cloud migration failure mode: discovering mid-program that remaining applications require substantially more work than the initial assessment suggested.