In one example, an Enterprise Service Bus (ESB) Sequencer may receive a request token that includes a plurality of ESB requests. The request token may be parsed into a plurality of service frames. Verification confirms a) each of the plurality of ESB requests are valid and corresponding services available and b) sufficient computing resources are available to complete each of the plurality of ESB requests. For each of the service frames an ESB may be called using a requested input source and format provided in the request token for the service frame. The respective output source from the ESB is received and stored. The respective output source may be used as an input source for one or more other service frames. One or more service frame output sources as requested by the request token may be sent to a calling application.
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