<p>In order for multi-sourcing to be successful, organisations must be capable of integrating their service providers into a single, cohesive unit.</p>

<p><em>SIAM/MSI &ndash; An introduction to Service Integration and Management/Multi-sourcing Integration for IT Service Management</em> explains:</p>

<ul>
<li>the merits of a multi-sourced approach to outsourcing service towers</li>
<li>the benefits of multi-sourcing contracts with service providers for specified towers</li>
<li>how to align multi-sourced services</li>
<li>the challenges of using a multi-sourced model</li>
<li>how to determine the IT operating model (with reference to the international standards ISO 38500, ISO 38501 and ISO 38502)</li>
<li>the different types of service integration models (ISI, ESI and ETSI), and the benefits and challenges of each</li>
<li>aggregating service-level performance</li>
<li>a multi-sourcing RFP approach, taking into account structural, operational and governance requirements.</li>
</ul>

<p>If you&rsquo;re thinking of moving from a single-source to a multi-source outsourcing model, <em>SIAM/MSI &ndash; An introduction to Service Integration and Management/Multi-sourcing Integration for IT Service Management</em> provides the answers to all of your questions.</p>

<p>David Clifford is a director of Pace Harmon, an international advisory firm headquartered in the USA. He has contributed to a number of publications about IT service management, writing about ITIL&reg;, service agreements and international standards. He also initiated, and contributed to the development and assisted with the promotion of EXIN&rsquo;s IT Service Management qualification program based on ISO/IEC 20000. He is currently Chair of the BSi committee on IT governance (ISO/IEC 38500) and contributes to the development of the IT service management standard ISO/IEC 20000 and BPO for IT enabled services (ISO/IEC 30105).</p>

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