EXIN SIAM Professional based on the Scopism SIAM BoK V3 cheat sheet
EXIN SIAM Professional based on the Scopism SIAM BoK V3 · Keep the key ideas within reach.
Governance, roles and responsibilities in a SIAM ecosystem
Accountability to the business is retained by the customer organisation; governance operationalises it.
Governance board sets direction and funds improvement; operational forums handle day-to-day decisions.
Single accountability per activity: service owner, process owner, SIAM owner and provider delivery manager hold distinct roles.
Provider staff are managed through contract and process, not customer line management.
Written decision rights and escalation timescales prevent deadlock.
SIAM structural elements: service integrator, service providers and retained capabilities
Three structural elements: service integrator, service providers, retained capabilities across customer, SIAM and provider layers.
Structural options are internal, external and hybrid integrators; each trades control against speed and cost.
Lead or prime provider models concentrate integration and delivery in one party, creating conflict-of-interest risk.
Retained capabilities (strategy, architecture, service ownership, security, sourcing, oversight) must be funded and staffed.
End-to-end accountability remains with the customer organisation whatever the structural option.
SIAM implementation and transition
Stages: discover and baseline, design, build, transition, operate and improve - delivered iteratively in waves.
Design precedes tooling; tooling enables the model but never defines it.
Contracts and SLAs must be renegotiated to reward collaboration and shared performance data.
Transition includes onboarding, knowledge transfer, readiness reviews, pilot or parallel running, cutover and legacy decommissioning.
Critical success factors: executive mandate, retained capability ready before cutover, provider exit plans, managed culture change.
SIAM operation, performance management and continual improvement
Operation runs on cadence: daily operations call, weekly service review, monthly provider performance review, quarterly business review.
Performance frameworks move from critical success factors to a small, actionable KPI set covering end-to-end service.
Interfaces between providers are the most common source of end-to-end underperformance.
Continual improvement needs prioritised, owned actions in an improvement register with verified benefit.
Provider-only SLAs can all be met while the end-to-end service fails - measure both.