How UK Mid-Market Companies Should Structure a Multi-Vendor IT Arrangement Without Leaving Gaps Between Providers
A technical guide for UK mid-market IT directors managing two or more external IT providers. Covers the specific failure modes of multi-vendor arrangements — incident ownership disputes, security responsibility gaps, and compliance blind spots — and provides a practical framework for structuring vendor relationships using SIAM governance, RACI matrices, and contractual accountability. Includes a responsibility matrix template, risk assessment for common gap areas, and guidance on controller obligations under UK GDPR when data flows across multiple processors.