A method for managing cellular network slicing, the method comprising: obtaining, by a cellular network management system, performance data from a plurality of cellular network components of a cellular network over time, wherein: the cellular network includes a radio access network, RAN, and a core cellular network, and the plurality of cellular network components comprise access points and base stations (121,122,123) of the RAN and cellular network data centers (131,140,150) of the core cellular network; analyzing, by the cellular network management system, the performance data from the plurality of cellular network components to create a cellular network model indicative of performance of the cellular network over time; receiving, by the cellular network management system, a service request from an external entity distinct from an entity operating the cellular network and cellular network management system, wherein: the service request defines a plurality of quality of service, QoS, parameters requested by the external entity; analyzing, by the cellular network management system, the cellular network model to determine that the cellular network has sufficient available resources to satisfy the plurality of QoS parameters of the service request; creating, by the cellular network management system, a cellular network access conditions package, wherein the cellular network access conditions package defines conditions under which the external entity is eligible to utilize the cellular network, wherein the cellular network access conditions package comprises a first set of modified QoS parameters that differ from the QoS parameters of the service request and the cellular network access conditions package further comprises a second set of QoS parameters that match the QoS parameters of the service request; transmitting, by the cellular network management system, the cellular network access conditions package to the external entity; receiving, by the cellular network management system, acceptance of the cellular network access conditions package from the external entity including acceptance of either the first set of modified QoS parameters or the second set of QoS parameters; configuring, by the cellular network management system, at least some of the plurality of cellular network components to permit access to the cellular network by user equipment of the external entity in accordance with the accepted QoS parameters of either the first set of modified QoS parameters and the second set of QoS parameters of the cellular network access conditions package; and providing, by the cellular network, data services to the UE of the external entity in accordance with the cellular network access conditions package. obtaining, by a cellular network management system, performance data from a plurality of cellular network components of a cellular network over time, wherein: the cellular network includes a radio access network, RAN, and a core cellular network, and the plurality of cellular network components comprise access points and base stations (121,122,123) of the RAN and cellular network data centers (131,140,150) of the core cellular network; analyzing, by the cellular network management system, the performance data from the plurality of cellular network components to create a cellular network model indicative of performance of the cellular network over time; receiving, by the cellular network management system, a service request from an external entity distinct from an entity operating the cellular network and cellular network management system, wherein: the service request defines a plurality of quality of service, QoS, parameters requested by the external entity; analyzing, by the cellular network management system, the cellular network model to determine that the cellular network has sufficient available resources to satisfy the plurality of QoS parameters of the service request; creating, by the cellular network management system, a cellular network access conditions package, wherein the cellular network access conditions package defines conditions under which the external entity is eligible to utilize the cellular network, wherein the cellular network access conditions package comprises a first set of modified QoS parameters that differ from the QoS parameters of the service request and the cellular network access conditions package further comprises a second set of QoS parameters that match the QoS parameters of the service request; transmitting, by the cellular network management system, the cellular network access conditions package to the external entity; receiving, by the cellular network management system, acceptance of the cellular network access conditions package from the external entity including acceptance of either the first set of modified QoS parameters or the second set of QoS parameters; configuring, by the cellular network management system, at least some of the plurality of cellular network components to permit access to the cellular network by user equipment of the external entity in accordance with the accepted QoS parameters of either the first set of modified QoS parameters and the second set of QoS parameters of the cellular network access conditions package; and providing, by the cellular network, data services to the UE of the external entity in accordance with the cellular network access conditions package.