AWS App Mesh increases default limits on several resources
AWS App Mesh has increased the default limits for a set of App Mesh resources – virtual nodes, backends, routers, and routes. These limit increases make it easier for you to manage larger applications with App Mesh. The number of virtual nodes per mesh, which map to your services, tasksets, or deployments that can be connected to the mesh, increased from 20 to 200. The number of backends per node; the number of dependent services that a specific service can connect with, increased from 25 to 50. The number of virtual routers per mesh increased from 20 to 200, to enable routing on all mesh connected services. The number of routes per virtual router increased from 20 to 50, to enable matching on multiple parameters for routing decisions.
Source:: Amazon AWS