Zeus Kerravala

Zeus Kerravala is the founder and principal analyst with ZK Research, and provides a mix of tactical advice to help his clients in the current business climate and long-term strategic advice. Kerravala provides research and advice to end-user IT and network managers, vendors of IT hardware, software and services and the financial community looking to invest in the companies that he covers.

How to deal with the impact of digital transformation on networks

7 considerations when buying network-automation tools

7 considerations when buying network-automation tools

Here’s the factors you need to weigh so you can make a smart decision about the network automation tool that’s best for your organization.

Passive optical LAN: Its day is dawning

Passive optical LAN: Its day is dawning

As bandwidth demands continue to increase and with copper cabling having distance shortcomings, passive optical networks looks like an alternative that can solve a number of problems.

How cloud providers' performance differs

How cloud providers' performance differs

The 2019 ThousandEyes Benchmark report shows that not all cloud providers are created equal across all regions

How to shop for enterprise firewalls

How to shop for enterprise firewalls

Performance, form factors, and automation capabilities are key considerations when choosing a next-generation firewall (NGFW).

What is Linux? The open-source operating system that's changing the world

What is Linux? The open-source operating system that's changing the world

Linux has long been the basis of commercial networking devices, but now it's a mainstay of enterprise infrastructure.

What is Transport Layer Security (TLS)?

What is Transport Layer Security (TLS)?

Transport-layer security is more effective than its predecessor SSL, and its latest version - TLS 1.3 - improves both privacy and performance.

DHCP defined and how it works

DHCP defined and how it works

Dynamic host configuration protocol simplifies and improves the accuracy of IP addressing but can raise security concerns

SDNs and NFV are complementary and core components of modernized networks

SDNs and NFV are complementary and core components of modernized networks

Software-defined networking and network functions virtualization both untie tasks and functions from hardware and provide agility, one for the network itself, the other for network services.

VPNs explained

VPNs explained

VPNs can create secure remote-access and site-to-site connections inexpensively, are a stepping stone to software-defined WANs, and are proving useful in IoT.

Talkdesk leverages AI to improve inside sales

Talkdesk leverages AI to improve inside sales

Talkdesk for Sales is an excellent example of how AI can be used to augment a worker’s skill set and make them more productive.

DigiCert’s acquisition of Symantec’s security business is good news for customers

DigiCert’s acquisition of Symantec’s security business is good news for customers

DigiCert’s already capable team gains some of the industry’s best talent and resources in the area of SSL/TLS certificates and related PKI solutions.

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