Nested Virtualization
Nested virtualization runs a hypervisor inside a virtual machine. Learn how it works, its use in labs and CI, and the performance cost it adds.
Knowledgebase
Clear answers to common hosting questions, written by our editors.
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By Maarten Soetens
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Domain Auth Code (EPP Code)
A domain auth code, also called an EPP code, is a secret password that proves you control a domain and can transfer it. Here is how it works.
By Maarten Soetens
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What Is PHP
What is PHP? It is a server-side scripting language that builds web pages on request. Learn why PHP powers many content management systems and hosting.
By Maarten Soetens
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WWW vs Non-WWW
www vs non-www for SEO: learn the technical differences, why search engines need one consistent version and how to choose and keep one for your site.
By Maarten Soetens
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UDRP Domain Name Disputes
UDRP is the ICANN policy for resolving domain name disputes over trademarks. Learn its three-part test, possible outcomes and common alternatives.
By Maarten Soetens
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MX Record
An MX record tells mail servers which host accepts email for a domain. Learn the format, how priority values work and why MX must point to a hostname.
By Maarten Soetens
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What Is a Database
What is a database? Learn how websites store content, users and orders in one, why dynamic sites depend on it, and how the data is organized.
By Maarten Soetens
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Static vs Dynamic IP Address
Static vs dynamic IP: a static IP address stays the same, while a dynamic IP is assigned by DHCP and can change. Learn why servers need fixed addresses.
By Maarten Soetens
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What Are Containers?
What is a container? Learn how containers package an app with its dependencies, share the host kernel and start faster than virtual machines.
By Maarten Soetens
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MariaDB vs MySQL
MariaDB vs MySQL explained: how MariaDB began as a MySQL fork, where the two stay compatible, where they diverge, and what that means for hosting.
By Maarten Soetens
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What Is Redis?
What is Redis? Learn how this in-memory key-value database stores data, keeps it after a restart and handles sessions and queues, plus its limits.
By Maarten Soetens
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Certificate Chains
Certificate chain explained: how root, intermediate and leaf certificates link a website to a trusted root, and why a missing intermediate breaks connections.
By Maarten Soetens