What Is Virtualization?
What is virtualization? It runs several isolated systems on one physical machine. Learn how it divides hardware and why web hosting depends on it.
Knowledgebase
Clear answers to common hosting questions, written by our editors.
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By Maarten Soetens
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Security Updates and Patching
Security updates patching closes known flaws before attackers use them. Learn which website layers need updates and why old software is a common cause of hacks.
By Maarten Soetens
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Rack Units (1U, 2U)
A rack unit (1U) explained: how server rack heights are measured, what 2U and 4U mean and how colocation providers often sell space by the unit.
By Maarten Soetens
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Cache Hit vs Miss
Cache hit vs miss explains whether a request is served from storage or the origin. Learn what the hit ratio means and why a low one signals a problem.
By Maarten Soetens
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Mobile-First Indexing
Mobile-first indexing means search engines use the mobile version of a page. Learn what content parity means and which elements must match across devices.
By Maarten Soetens
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Hosting Uptime Guarantees
What a hosting uptime guarantee covers: how an SLA defines downtime, which exclusions apply, how service credits work and why a guarantee is not a promise.
By Maarten Soetens
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What Is Windows Server?
Windows Server is Microsoft's operating system for hosting services. Learn its main roles, editions and when a website or application actually needs it.
By Maarten Soetens
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Principle of Least Privilege
The principle of least privilege gives users, database accounts, FTP users and API keys only the access they need, so a stolen login does less damage.
By Maarten Soetens
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Google Cloud Platform (GCP)
Google Cloud Platform (GCP) explained: its core services, its strengths in Kubernetes and data analytics, and how it fits into the wider cloud market.
By Maarten Soetens
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What Is a Cron Job?
A cron job is a task a Linux server runs automatically on a schedule. Learn how the cron daemon works, what crontabs are and what hosts use cron for.
By Maarten Soetens
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Server-Side Caching
Server side caching stores results on the hosting server before they reach visitors, cutting CPU and database work. Learn how it works and where it fits.
By Maarten Soetens
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What Is JavaScript?
What is JavaScript? It is the programming language that makes web pages interactive. Learn how it runs in browsers and on servers, and what ECMAScript is.
By Maarten Soetens