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  2. Technical support - Wikipedia

    en.wikipedia.org/wiki/Technical_support

    Tier III (or Level 3, abbreviated as T3 or L3) is the highest level of support in a three-tiered technical support model responsible for handling the most difficult or advanced problems. It is synonymous with level 3 support, 3rd line support, back-end support, support line 3, high-end support, and various other headings denoting expert level ...

  3. Data centre tiers - Wikipedia

    en.wikipedia.org/wiki/Data_centre_tiers

    Tier III: full N+1 redundancy of all systems, including power supply and cooling distribution paths Tier IV : as Tier III, but with 2N+1 redundancy of all systems A Tier III system is intended to operate at Tier II resiliency even when under maintenance, and a Tier IV system is intended to operate at Tier III resiliency even when under maintenance.

  4. Data center management - Wikipedia

    en.wikipedia.org/wiki/Data_center_management

    Technical support (often shortened to tech support) refers to services. Within a corporation, these are also known as help desks [38] often arrange their technical support structure as a three-tier (plus two) system: [39] Tier 1: Basic help desk – initial point of contact, including software opening a trouble ticket.

  5. IT service management - Wikipedia

    en.wikipedia.org/wiki/IT_service_management

    A service desk is a primary IT function within the discipline of IT service management (ITSM) as defined by ITIL. It is intended to provide a Single Point of Contact (SPOC) to meet the communication needs of both users and IT staff, [7] and also to satisfy both Customer and IT Provider objectives.

  6. Production support - Wikipedia

    en.wikipedia.org/wiki/Production_Support

    A production support analyst or engineer is responsible for monitoring the production environments, servers, scheduled jobs, incident management and receiving incidents and requests from end-users, analyzing these and either responding to the end user with a solution or escalating it to other IT teams.

  7. Information technology consulting - Wikipedia

    en.wikipedia.org/wiki/Information_technology...

    In management, information technology consulting (also called IT consulting, computer consultancy, business and technology services, computing consultancy, technology consulting, and IT advisory) is a field of activity which focuses on advising organizations on how best to use information technology (IT) in achieving their business objectives and goals, but it can also refer more generally to ...

  8. Service-level agreement - Wikipedia

    en.wikipedia.org/wiki/Service-level_agreement

    [citation needed] Operational-level agreements or OLAs, however, may be used by internal groups to support SLAs. If some aspect of service has not been agreed upon with the customer, it is not an "SLA". SLAs commonly include many components, from a definition of services to the termination of agreement. [2]

  9. Multitier architecture - Wikipedia

    en.wikipedia.org/wiki/Multitier_architecture

    The most widespread use of multitier architecture is the three-tier architecture (for example, Cisco's Hierarchical internetworking model). N-tier application architecture provides a model by which developers can create flexible and reusable applications. By segregating an application into tiers, developers acquire the option of modifying or ...