Global server load balancing (GSLB)

Optimize DNS server usage and network performance to improve user-experience

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Enhance traffic routing performance. Get 30% off your first monthly or annual subscription. Offer ends 15 December 2025.

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Advanced GLSB solution at low cost

Optimize user experience and improve network resilience—at a lower cost—with IBM® NS1 Connect® GSLB. Discover a new approach to global load balancing powered by DNS load balancing and real-time device performance data. 
No single points of failure

By using DNS load balancing from the outset of a DNS request, NS1 Connect ensures resilient connections, eliminating bottlenecks and reducing dependency on a single part of the network.
Improved user experience

Real-time traffic data from RUM-based traffic steering helps optimize DNS traffic routing for minimal latency and maximum performance.
Lower GSLB costs

Entirely cloud-delivered, we offer cloud-based ELBs, web application firewalls (WAFs) and in-house solutions. Clear SaaS pricing avoids constant appliance upgrades and replacement costs. 
Automated GSLB management

NS1 Connect’s API-first architecture ensures seamless integration with existing automation platforms such as Terraform and Ansible, making it easy for efficient global traffic management. 
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See how easy it is to set up NS1 Connect monitors, create filter chains, manage your HTTPS redirects and more.

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Usage scenarios

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Optimize user connections

By using real-user monitoring (RUM) data, IBM NS1 Connect intelligently loads balances traffic to the most responsive and available endpoints, reducing latency and improving DNS high availability.
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Remove single points of failure

Unlike traditional load balancers, IBM NS1 Connect GSLB doesn’t rely on a single entry point for all inbound traffic. Our ability to automatically steer traffic at the DNS level gives your application multiple options to resolve.
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Use a SaaS GSLB alongside existing load balancing solutions

Experience the specific benefits of a SaaS GSLB solution while using traditional load balancers for other use cases. IBM NS1 Connect GSLB integrates seamlessly with your existing load balancers, enhancing existing global load balancing capabilities with RUM data. 
Save money while improving app performance

IBM NS1 Connect GSLB runs at a lower cost compared to GSLB solutions offered by traditional load balancers. Enjoy a solution that improves user experience while saving a significant amount of money.
A woman touching a screen, indicating fast connections suppoerted by IBM NS1 Connect
Optimize user connections

By using real-user monitoring (RUM) data, IBM NS1 Connect intelligently loads balances traffic to the most responsive and available endpoints, reducing latency and improving DNS high availability.
Person looking at usage reports on a tablet
Remove single points of failure

Unlike traditional load balancers, IBM NS1 Connect GSLB doesn’t rely on a single entry point for all inbound traffic. Our ability to automatically steer traffic at the DNS level gives your application multiple options to resolve.
Aerial view of shipping containers on dock
Use a SaaS GSLB alongside existing load balancing solutions

Experience the specific benefits of a SaaS GSLB solution while using traditional load balancers for other use cases. IBM NS1 Connect GSLB integrates seamlessly with your existing load balancers, enhancing existing global load balancing capabilities with RUM data. 
Save money while improving app performance

IBM NS1 Connect GSLB runs at a lower cost compared to GSLB solutions offered by traditional load balancers. Enjoy a solution that improves user experience while saving a significant amount of money.

More use cases

Illustration of DNS reporting featuring network issues and DDOS threats
Use real-time DNS reporting to identify and resolve network issues and DDOS threats.
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Learn more

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Slash latency and eliminate downtime
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Reimagine GSLB with DNS and RUM data
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Elevate business with premium GSLB
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Extend GSLB functionality, while cutting costs
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Footnote

This offer is applicable only when purchased on IBM.com and cannot be combined with other promotions. Prices shown are indicative, may vary by country, exclude any applicable taxes and duties, and are subject to product offering availability in a locale. Subscription cost will renew at the then current price at the end of the first year. Renewals are excluded from promotions.