What type of Loadbalancer do you need to select when the traffic is only TCP SSL?
Skip to main content This browser is no longer supported. Show Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. What is Azure Load Balancer?
In this articleLoad balancing refers to evenly distributing load (incoming network traffic) across a group of backend resources or servers. Azure Load Balancer operates at layer 4 of the Open Systems Interconnection (OSI) model. It's the single point of contact for clients. Load balancer distributes inbound flows that arrive at the load balancer's front end to backend pool instances. These flows are according to configured load-balancing rules and health probes. The backend pool instances can be Azure Virtual Machines or instances in a virtual machine scale set. A public load balancer can provide outbound connections for virtual machines (VMs) inside your virtual network. These connections are accomplished by translating their private IP addresses to public IP addresses. Public Load Balancers are used to load balance internet traffic to your VMs. An internal (or private) load balancer is used where private IPs are needed at the frontend only. Internal load balancers are used to load balance traffic inside a virtual network. A load balancer frontend can be accessed from an on-premises network in a hybrid scenario.
Figure: Balancing multi-tier applications by using both public and internal Load Balancer For more information on the individual load balancer components, see Azure Load Balancer components. Note Azure provides a suite of fully managed load-balancing solutions for your scenarios.
Your end-to-end scenarios may benefit from combining these solutions as needed. For an Azure load-balancing options comparison, see Overview of load-balancing options in Azure. Why use Azure Load Balancer?With Azure Load Balancer, you can scale your applications and create highly available services. Load balancer supports both inbound and outbound scenarios. Load balancer provides low latency and high throughput, and scales up to millions of flows for all TCP and UDP applications. Key scenarios that you can accomplish using Azure Standard Load Balancer include:
Secure by default
Pricing and SLAFor standard load balancer pricing information, see Load balancer pricing. Basic load balancer is offered at no charge. See SLA for load balancer. Basic load balancer has no SLA. What's new?Subscribe to the RSS feed and view the latest Azure Load Balancer feature updates on the Azure Updates page. Next steps
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