Abstract: In an example, web service deployments may be scaled dynamically by monitoring service level metrics relating to a worker and a job queue. Based on the monitored service level metrics, values are calculated for an average worker capacity, a number of workers required to process the incoming jobs, and a number of workers required to process queued jobs. A target number of workers to process the incoming and the queued jobs is then determined at a particular point in time based on the calculated values. Accordingly, the number of workers is adjusted to match the determined target number of workers by provisioning new workers or terminating active workers as required.