The emergence of cloud computing, along with the advancement of technologies such as virtualisation and converged infrastructures, has led to a range of data centre optimisation and modernisation strategies. Organisations can choose between three main data centre strategies: in-house, co-location, or cloud. Many organisations follow a range of data centre strategies. Dimension Data’s global expansion and acquisitions have resulted in numerous servers within its own global environment, which are distributed across multiple countries. Some of these reside within in-house data centres, while many are co-located. Increasingly, Dimension Data moves applications to computing resources hosted within its own Managed Cloud Platforms. An in-house data centre is built, owned and operated by the end-user organisation, affording maximum infrastructure accessibility, control, and privacy. The high costs associated with the design, build, upgrade, temperature control, operator training, daily management, and skill retention, combined with the risk of aggregating all organisational information in a location(s), may detract from the business case for building an in-house data centre. Cloud computing strategies involve the purchase of computing resources as required from a third party, which owns and operates the IT infrastructure. Cloud computing services can be purchased on a public basis, where an organisation can access computing resources alongside other organisations, or on a private basis, where organisations have exclusive access to specified computing resources. They can also be purchased in a hybrid model – a combination of public and private cloud computing.
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