Gartner Blog Network

Andrew Lerner
Research Vice President
4 years at Gartner
19 years IT Industry

Andrew Lerner is a Vice President in Gartner Research. He covers enterprise networking, including data center, campus and WAN with a focus on emerging technologies (SDN, SD-WAN, and Intent-based networking). Read Full Bio

SD-WAN is going Mainstream…

by Andrew Lerner  |  June 3, 2017

SDWAN remains a topic of high interest among Gartner clients. While many networking technologies are over-hyped as the next big thing, SDWAN is delivering on the promise. In just three short years, adoption has taken off and we now estimate 6,000+ paying SDWAN customers with more than 4,000 production implementations. We recommend you look at SDWAN […]

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Do you have a ticking time-bomb in your Network?

by Andrew Lerner  |  May 19, 2017

This is a guest blog from Mark Fabbi Since February 2017, a growing number of network and security vendors have published field notices or confirmed that some product lines have an increasing likelihood of total system failure. Due to vendor NDAs, the defective component has not been officially named but the problems are widely believed […]

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Networking for Office365

by Andrew Lerner  |  April 26, 2017

This is a guest blog via Neil Rickard  One of my top inquiry topics with Gartner clients is Networking questions and challenges surrounding Office 365.  Further, in surveys we’ve conducted, performance is the fourth overall technical problem reported with O365, and network issues are a top cause of these performance issues. The biggest networking challenges […]

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Cool Network Vendors 2017

by Andrew Lerner  |  April 18, 2017

Every year, we publish Cool Vendors in Enterprise Networking to highlight lesser-known vendors doing cool things in the networking market. Coolness is certainly subjective, and my wife (or anyone who knew me in high school) would argue that I am no authority on the topic, but for me coolness is the ability to solve challenges in an […]

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Smart Money

by Andrew Lerner  |  April 10, 2017

This is a guest blog from Joe Skorupa. I’m fortunate enough to work with a number of exciting startup clients. While we spend a good deal of time on product and go to market strategy, we often also discuss and assist with raising venture capital. Some teams just care about the valuation and dilution. They […]

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Uncool Networking Vendors

by Andrew Lerner  |  April 1, 2017

This year I’m excited to announce that the Gartner networking research team will be piloting a new type of research. While you may be familiar with our Cool Vendors series of research, we’ve decided to try something new this year focusing on Uncool Vendors. Luckily, enterprise networking is one of the areas where we are piloting this […]

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Microsegmentation

by Andrew Lerner  |  March 21, 2017

Microsegmentation is a hot topic, and is one of the top-three inquiry subjects for Gartner clients regarding cloud security. I’m not a security analyst, but microsegmentation comes up quite a bit on my client calls, probably because many folks are looking at Cisco ACI and/or VMware NSX (and it has driven at least 50% of the […]

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Help, I hate my (Traditional) Network Carrier

by Andrew Lerner  |  February 23, 2017

Gartner analysts have conducted over 3,500 WAN-related client inquiries, and reviewed more than 500 service provider contracts in the past year and one thing is crystal clear: Enterprises are dissatisfied with large incumbent network service providers. However, there are other choices and organizations should cast a wider net to look at offers from alternative providers. […]

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NetOps 2.0

by Andrew Lerner  |  February 16, 2017

In Networking, we’re all sick of hearing it… it generally goes something like this:  “The network is the long pole in the tent, I can spin up VMs or go to the public cloud in minutes, but it takes days/weeks to get the network (i.e., VLANs/ACLs/Firewalls) configured”. While easy to complain, this is a difficult […]

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Intent-based Networking

by Andrew Lerner  |  February 7, 2017

There’s always a “next big thing” in networking…. Five years ago, it was Ethernet Fabrics in the data center, then came SDN, and currently it is SD-WAN.  As SD-WAN adoption grows and shifts from bleeding to leading edge, the next big thing on the networking horizon promises to be …. wait for it … Intent-based […]

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