Managing IT Environment Complexity

The complexity of the IT environment is among the most persistent and most consequential security governance challenges that the Security Consulting function addresses, because complexity is the condition that makes every other security challenge harder to manage while simultaneously being the product of the technology adoption decisions that have delivered the business capabilities the organisation depends upon. The Security Consulting function’s advisory on IT complexity management must therefore govern the tension between the functionality that the complexity enables and the security risk that it creates with the commercial intelligence that neither dismisses the complexity’s business value nor ignores the security consequences that the complexity’s management demands.

The modern enterprise’s IT environment has reached its current complexity through the accumulation of individually justified decisions whose aggregate effect the individual decision’s incremental contribution has not made visible at the time each decision was made. Each application deployment, each system integration, each cloud service adoption, and each network extension has added to the complexity that the environment now presents, without the periodic rationalisation that would have maintained the architectural coherence that the original design intended. The Security Consulting function that encounters this accumulated complexity must govern its advisory with the realistic assessment of what simplification is achievable within the operational constraints the business faces, directing the rationalisation effort toward the complexity dimensions whose security risk most warrants the investment rather than the comprehensive simplification that the theoretical ideal demands but the operational reality prevents.

The Security Risk Dimensions of IT Complexity #

The security risks that IT environment complexity creates must be understood with the specificity that enables the Security Consulting function’s advisory to connect each risk dimension to the specific complexity characteristic that produces it and the specific mitigation approach that addresses it most effectively.