Varnish is the leading web acceleration and content delivery software that powers more than ten million websites worldwide and that is trusted by more than 20% of the top 10,000 websites.   Varnish caches HTTP responses and accelerates anything that communicates over HTTP by doing so. The technology is used not only to accelerate websites and APIs, but also for live & VoD video streaming platforms, to build private CDNs, and even to operate in a 5G multi-access edge cloud context.   This book covers the ins and outs of the Varnish ecosystem and focuses on both the open source and enterprise versions of the software. This in-depth technical book is targeted at developers and operations engineers but can also be valuable for decision-makers.   Regardless of your role, if you’re interested in high-performance content delivery, this book is for you.   Thijs Feryn is a technical evangelist at Varnish Software. For more information, please visit www.varnish-software.com.