A systems administrator migrated a company's CRM middleware to a VPC and left the database in the company's datacenter. The CRM application is now accessible over the Internet. A VPN between the compa

Increasing the resources (CPU, memory) for the middleware addresses processing bottlenecks within the application, not the network latency experienced between the VPC and the distant on-premises database.

Adding more resources to the VPC, specifically referring to enhancing network connectivity such as upgrading the VPN gateway's capacity or implementing a dedicated cloud interconnect service like AWS Direct Connect or Azure ExpressRoute, can significantly reduce latency. These dedicated connections bypass the public internet and offer higher bandwidth and more consistent, lower-latency paths between the VPC and the on-premises datacenter.

While moving the database into the cloud would eliminate the cross-premises latency, 'Add more resources to the VPC' is a solution focused on optimizing the existing hybrid cloud connectivity, which is often a necessary step when a full database migration is not immediately feasible.

Implementing load balancers in the VPC distributes incoming traffic among multiple instances or services within the VPC, but it does not reduce the network latency for communication between the VPC and an external, on-premises database.