The load balancer plays an important role for those who have applications in the cloud. But do you know exactly what it is, how it works and what are the advantages of using it? Come to the blog to find out what it can do to take your application to the next level!

The load balancer is the most assertive method to adjust the infrastructure of your servers according to demand. With the volume of traffic increasing and applications becoming more and more complex, understanding its role in your business is critical.

When thinking about this, we understand the importance of talking about the available types of load balancer , as well as their advantages and ways to implement it cost-effectively!

What is load balancer ?

It is a solution that distributes network or application traffic across multiple servers – all cloud computing . Imagine that when your server experiences a traffic spike or stops responding to user requests, it shifts the extra load to a different server automatically.

By reducing the load on individual servers, the load balancer is able to increase availability and improve the performance of networks and applications. It also prevents traffic bottlenecks on systems and eliminates the possibility of a single point of failure on your servers.

In providers with AWS ( Amazon Web Services ), the load balancer can distribute its load in more than one Availability Zone, that is, in more than one Data Center . This greatly increases the strength of your application, as your infrastructure will be split into different locations.

What are the types of load balancers ?

Often, the load balancer is categorized according to its compatibility with the Open System Interconnection (OSI) model layers. Are they:

– Layer 4 (L4): Able to direct traffic based on network data and transport layer protocols such as IP address and TCP port.

Layer 7 (L7): capable of making routing decisions based on application layer attributes and data such as HTTP header, uniform resource identifier, SSL session ID, and HTML form data.

GSLB ( Global Server Load Balancing ) : Extends key L4 and L7 features to be applicable in geographically distributed server farms

Through Elastic Load Balancing (ELB) , Amazon Web Services (AWS) offers three types of load balancers : application, network, and classic.

Advantages of using load balancer

The load balancer provides the foundation for building flexible networks that meet your demands in real time, improving the security and performance of your applications. Shall we see some of its main features?

High Availability

The load balancer is able to distribute traffic across multiple targets within multiple Availability Zones.


The Web Services (AWS) load balancer Amazon Virtual Private Cloud (Amazon VPC) to define security statements and networks. In addition, it offers an option the load balancer , without exposure to the internet.

No unpleasant surprises

Through complex algorithms, the load balancer is able to detect which instances are experiencing failures and redirect the load distribution to destinations that do not present problems.

Sky.Saver: start saving with load balancer

Using load balancer is an excellent way to ensure the high performance of your applications, minimizing the chance of interruptions and failures, however, this solution comes at a price and it does not always fit in the pockets of companies.

To help you save money on Amazon Web Services (AWS) infrastructure, we created Sky.Saver , which allows you to manage instances connected to your load balancer . Thus, you can achieve maximum performance without unnecessary expenses, or the need for a highly dedicated and specialized team, making it possible to reduce your costs by up to 80%.

How about trying Sky.Saver for free for 15 days? See what it's like to maintain your best performance!


Written by

Sky.One Team

This content was produced by SkyOne's team of cloud and digital transformation experts.

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