Azure Load Balancer SKUs
On September 30, 2025, Basic Load Balancer will be retired. For more information, see the official announcement. If you are currently using Basic Load Balancer, make sure to upgrade to Standard Load Balancer prior to the retirement date. For guidance on upgrading, visit Upgrading from Basic Load Balancer - Guidance.
Azure Load Balancer has three SKUs.
Azure Load Balancer has 3 SKUs - Basic, Standard, and Gateway. Each SKU is catered towards a specific scenario and has differences in scale, features, and pricing.
To compare and understand the differences between Basic and Standard SKU, see the following table.
|Standard Load Balancer
|Basic Load Balancer
|Equipped for load-balancing network layer traffic when high performance and ultra-low latency is needed. Routes traffic within and across regions, and to availability zones for high resiliency.
|Equipped for small-scale applications that don't need high availability or redundancy. Not compatible with availability zones.
|IP based, NIC based
|Backend pool endpoints
|Any virtual machines or virtual machine scale sets in a single virtual network
|Virtual machines in a single availability set or virtual machine scale set
|TCP, HTTP, HTTPS
|Health probe down behavior
|TCP connections stay alive on an instance probe down and on all probes down.
|TCP connections stay alive on an instance probe down. All TCP connections end when all probes are down.
|Zone-redundant and zonal frontends for inbound and outbound traffic
|Azure Monitor multi-dimensional metrics
|Available for Internal Load Balancer
|Secure by default
|Closed to inbound flows unless allowed by a network security group. Internal traffic from the virtual network to the internal load balancer is allowed.
|Open by default. Network security group optional.
|Declarative outbound NAT configuration
|TCP Reset on Idle
|Available on any rule
|Multiple front ends
|Inbound and outbound
|Most operations < 30 seconds
|60-90+ seconds typical
|Global VNet Peering Support
|Standard Internal Load Balancer is supported via Global VNet Peering
|NAT Gateway Support
|Both Standard Internal Load Balancer and Standard Public Load Balancer are supported via Nat Gateway
|Private Link Support
|Standard Internal Load Balancer is supported via Private Link
|Standard Load Balancer supports the Global tier for Public Load Balancers enabling cross-region load balancing
For more information, see Load balancer limits. For Standard Load Balancer details, see overview, pricing, and SLA. For information on Gateway SKU - catered for third-party network virtual appliances (NVAs), see Gateway Load Balancer overview
- A standalone virtual machine resource, availability set resource, or virtual machine scale set resource can reference one SKU, never both.
- Move operations:
- See Create a public Standard Load Balancer to get started with using a Load Balancer.
- Learn about using Standard Load Balancer and Availability Zones.
- Learn about Health Probes.
- Learn about using Load Balancer for outbound connections.
- Learn about Standard Load Balancer with HA Ports load balancing rules.
- Learn more about Network Security Groups.