A computing system comprising: a simulation controller device configured to store playback instructions, wherein the playback instructions encode corresponding transactions that were captured in a computational instance deployed in a production environment and wherein the playback instructions include high-fidelity data corresponding to packets detected by a traffic filter device that records incoming network traffic and low-fidelity data corresponding to file system logs provided by one or more server devices in the production environment, the file system logs including information relating to transactions of the transactions that were captured in the computational instance that occurred between applications on the one or more server devices that utilize a loopback mechanism such that packets do not leave that server device and are internally routed from application to application, wherein the simulation controller device is configured to correlate and cross-reference the high-fidelity data and the low-fidelity data and encode in the playback instructions a combined representation of total transactions experienced by the one or more server devices in the production environment; one or more load generator devices, coupled to the simulation controller device, configured to: (i) receive a playback instruction from the simulation controller device, and (ii) decode the playback instruction into a sequence of packets, wherein the playback instruction is from the stored playback instructions; one or more computing devices, coupled to the one or more load generator devices, configured to: (i) receive the sequence of packets from the one or more load generator devices, and (ii) based on processing the sequence of packets, simulate a transaction corresponding to the playback instruction; and one or more database devices, coupled to the one or more computing devices, configured to: (i) replicate a configuration and stored content of a database from the computational instance deployed in the production environment, and (ii) provide parts of the stored content requested by the one or more computing devices during the simulated transaction. a simulation controller device configured to store playback instructions, wherein the playback instructions encode corresponding transactions that were captured in a computational instance deployed in a production environment and wherein the playback instructions include high-fidelity data corresponding to packets detected by a traffic filter device that records incoming network traffic and low-fidelity data corresponding to file system logs provided by one or more server devices in the production environment, the file system logs including information relating to transactions of the transactions that were captured in the computational instance that occurred between applications on the one or more server devices that utilize a loopback mechanism such that packets do not leave that server device and are internally routed from application to application, wherein the simulation controller device is configured to correlate and cross-reference the high-fidelity data and the low-fidelity data and encode in the playback instructions a combined representation of total transactions experienced by the one or more server devices in the production environment; one or more load generator devices, coupled to the simulation controller device, configured to: (i) receive a playback instruction from the simulation controller device, and (ii) decode the playback instruction into a sequence of packets, wherein the playback instruction is from the stored playback instructions; one or more computing devices, coupled to the one or more load generator devices, configured to: (i) receive the sequence of packets from the one or more load generator devices, and (ii) based on processing the sequence of packets, simulate a transaction corresponding to the playback instruction; and one or more database devices, coupled to the one or more computing devices, configured to: (i) replicate a configuration and stored content of a database from the computational instance deployed in the production environment, and (ii) provide parts of the stored content requested by the one or more computing devices during the simulated transaction.