About the project
Revision Hub is a set of free revision sites for EDHEC BBA1 courses, made by a student for classmates.
It is an independent project. EDHEC Business School does not run, check or endorse it.
Revision Hub is a joint project with a partner site: the two sites are gathered on one main page.
- Main page
- To come
- Partner site
- Nexus (nexus-revision.com)
- Its publisher
- Christo Czysz
- Its contact
- christo.czysz@edhec.com
The lessons follow the courses. The cases, companies, questions, generators and tools are written for the hub. Mistakes can happen: your course material and your teachers come first. If you spot one, write to the contact below.
Legal notice
- Publisher
- Zadig Colin, a student publishing the hub as a private individual
- Director of publication
- Zadig Colin
- Contact
- zadig.colin@edhec.com
- Host
- Cloudflare, Inc., 101 Townsend St., San Francisco, CA 94107, United States
- Host's phone
- +1 650 319 8930
- Host's website
- www.cloudflare.com
This notice covers Revision Hub only. The partner site and the main page have their own publishers and legal notices.
Terms of use
Using the hub means you accept these terms. The hub is free, and you need no account to use it.
- The hub helps you revise. It does not promise any grade or exam result.
- Ask AI answers come from an AI model and can be wrong. Do not type personal information into it.
- Reviews are public as soon as they are posted. Spam, insults and links are removed. Write only what you are happy to see published; your first name is optional.
- If you have an account, keep your password to yourself. You can delete your saved progress at any time from your dashboard.
- Do not try to break, overload or copy the hub, its questions or its data.
- The hub can change, pause or stop at any time.
- These terms follow French law.
Your data
The hub collects as little as it can. There is no advertising, no tracking cookie and no visitor statistics. Zadig Colin is responsible for the data described here.
- On your device
- Your scores, flashcards, Night / Day and language choices, and your number of Ask AI questions today are kept in your browser's storage. They stay on this device, unless you log in to an account.
- Ask AI
- Your question and the conversation so far are sent to Groq, Inc. (United States), whose AI writes the answer. The hub does not keep them.
- Reviews
- Your stars, your text, your first name if you give one and the course are stored with the host and shown to everyone, until the review is removed.
- Accounts
- Accounts are not open yet. When they open, your name, e-mail and password will be handled by a separate login service, named on this page: the hub never sees your password. Your results and your time on the site are then kept with the host under an account number, without your name or e-mail, until you delete them.
- Hosting and fonts
- The host named in the legal notice receives your IP address to send you the pages and to block abuse, such as too many requests in a minute. The fonts come from Google Fonts, which also receives your IP address.
- Outside the EU
- The host, Groq and Google are based in the United States. The host says it complies with the EU-U.S. Data Privacy Framework.
- Your rights
- You can ask to see, correct or delete your data, or object to its use: write to zadig.colin@edhec.com. You can also complain to the CNIL, the French data protection authority (www.cnil.fr).
Copyright
© 2026 Zadig Colin. The hub's design, code, texts, made-up cases, question banks and generators are protected by copyright. Do not copy or republish them without written permission. Using them to revise, and sharing the hub's link, is welcome.
EDHEC is the name of EDHEC Business School, and the course names refer to its programme. TOSA is a certification by Isograd. Microsoft, Word and Excel are trademarks of Microsoft Corporation. They are named only to describe what the hub helps you revise; none of them is linked to the hub.
The partner site and its content belong to its author.
The hub also uses open-source work:
- Univer
- Apache licence. It runs the spreadsheet in the Excel tasks.
- Fluent System Icons
- MIT licence, by Microsoft. They draw the Word ribbon.
- Geist · Geist Mono · Atkinson Hyperlegible Next
- SIL Open Font Licence. They are the hub's fonts.
Prices and sales
Nothing is sold today: every part of the hub is free. The plans on the Pricing page show what may come, and no payment can be made.
Before any paid plan opens, its terms of sale will be published here: the seller's full details, the price, payment, cancellation and your right of withdrawal.
Last updated: 31 October 2026