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We study the problem of ultrareliable and low-latency slicing in multiaccess edge computing (MEC) systems for the next-generation Internet of Things (IoT) and mobile applications operating in the space–air–ground integrated network. The network has a dynamic topology formed by multiple nonstationary nodes with unstable communication links and unreliable processing/transmission resources. Each node can be in one of two hidden states: 1) reliable—in which the node generates no data errors and no losses and 2) unreliable—when the node can generate/propagate random data errors/losses. Solving this problem is difficult, as it represents the nondeterministic polynomial-time (NP) hard nonconcave nonsmooth stochastic maximization problem which depends on the unknown hidden nodes’ states and private information about local, dynamic parameters of each node, which is known only to this node, and …