Why the Juice Shop exists
To the unsuspecting user the Juice Shop just looks like a small online shop which sells - surprise! - fruit & vegetable juice and associated products. Except for the entirely overrated payment and delivery aspect of the e-commerce business, the Juice Shop is fully functional. But this is just the tip of the iceberg. The Juice Shop contains 106 challenges of varying difficulty where you are supposed to exploit underlying security vulnerabilities. These vulnerabilities were intentionally planted in the application for exactly that purpose, but in a way that actually happens in "real-life" web development as well!
Your hacking progress is tracked by the application using immediate push notifications for successful exploits as well as a score board for progress overview. Finding this score board is actually one of the (easiest) challenges! The idea behind this is to utilize gamification techniques to motivate you to get as many challenges solved as possible - similar to unlocking achievements in many modern video games.
Development of the Juice Shop started in September 2014 as the author’s personal initiative, when his employer needed a more modern security training exercise environment for an in-house web application. The previously used environment was still from the era of server-side rendered ASP/JSP/Servlet and did not reflect the reality of current web technology. The Juice Shop was developed as open-source software without any corporate branding right from the beginning. By the end of 2014, most of the current e-commerce functionality was up and running
along with an initial number of planted vulnerabilities. Over the years more variants of vulnerabilities were added. In parallel, the application was kept up-to-date with the latest web technology (e.g. WebSockets and OAuth 2.0) and frontend frameworks (i.e. by migrating from AngularJS with Bootstrap to Angular with Material Design). Some of these additional capabilities brought the chance to add corresponding vulnerabilities - and the list of challenges has been growing ever since.
Why OWASP Juice Shop?
The Open Worldwide Application Security Project (OWASP) is a nonprofit foundation that works to improve the security of software. Our programming includes:
Community-led open source software projects Over 275 local chapters worldwide Tens of thousands of members Industry-leading educational and training conferences We are an open community dedicated to enabling organizations to conceive, develop, acquire, operate, and maintain applications that can be trusted. All of our projects, tools, documents, forums, and chapters are free and open to anyone interested in improving application security. The OWASP Foundation launched on December 1st, 2001, becoming incorporated as a United States non-profit charity on April 21, 2004. 
Two years after its inception the Juice Shop was submitted and accepted as an OWASP Tool Project by the Open Worldwide Application Security Project in September 2016. This move increased the overall visibility and outreach of the project significantly, as it exposed it to a large community of application security practitioners.
Once in the OWASP project portfolio it took only eight months until Juice Shop was promoted from the initial Incubator maturity level to Lab Projects level. By the end of July 2018 the Juice Shop was promoted to the final Flagship maturity stage for OWASP projects.
Why the name "Juice Shop"?
Why the logo?
In 2017 the logo received a facelift and a spin-off when the Juice Shop introduced its Capture-the-flag extension (which is discussed in its own
Why yet another vulnerable web application?
A considerable number of vulnerable web applications already existed before the Juice Shop was created. The OWASP Vulnerable Web Applications Directory (VWAD) maintains a list of these applications. When the Juice Shop came to life there were only server-side rendered applications in the VWAD, but Rich Internet Application (RIA) or Single Page Application (SPA) style applications were already a commodity at that time. Juice Shop was meant to fill that gap.
Many of the existing vulnerable web applications were very rudimentary in their functional scope. So the aim of the Juice Shop was also to give the impression of a functionally complete e-commerce application that could actually exist like this in the wild.