It refers to the Monday immediately following Black Friday. It is a special online stores shopping day and also an unofficial beginning of internet shopping season.
Retailers noticed, in about 2003 and 2004, that many consumers, who were too busy to shop over weekend or did not find what they were looking for, shopped for bargains online that Monday from home or work.
The term "Cyber Monday" was, according to Wikipedia, created by marketing companies to persuade people to shop online. Cyber Monday quickly become one of the biggest online shopping days of the year.
Cyber Monday has become an international marketing term used by online retailers not only in United States but also in other countries such as: Argentina, Canada, Chile, Columbia, Germany, Ireland, Uganda, Japan, Portugal, Sweden, United Kingdom, …
Eshops Association is preparing a presentation of all eshops of Slovakia and Czech Republic, which will take part in Cyber Monday 2018.