Load balancer whose frontend is a private address inside a subnet. It distributes traffic among application tiers or for VPN-connected users and is unreachable from the internet.
Also called ILB.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains Internal load balancer in context, with comparison tables and the common traps.
Terms in this definition
- ELT
Extract, load, transform: raw data lands in the target system first and is transformed there. See ETL for the opposite order.
- Subnet
A segment of a VNet's address space from which resources receive private IPs. Azure holds back five addresses per subnet (the first four and the last), leaving 251 usable in a /24 and three in a /29, the smallest IPv4 subnet.
Related terms
- Accessibility level
Whether a Container Apps environment is reachable publicly or only privately, fixed when the environment is made. With external, its virtual IP sits on a public address; with internal, an internal load balancer in your own virtual network holds it.
- Private Link origin
In Azure Front Door Premium, an origin (App Service, Storage or an internal load balancer) reached through a managed private endpoint that Front Door creates and the origin's owner approves.