It's an exclusive opportunity backed by the Estonian government that grants anyone access to the European Union's trusted digital environment. Upon becoming an e-Resident, you will receive a digital-ID card which will allow you to establish and manage a remote online business, apply for a multiple-currency EU bank account, digitally sign and send documents, etc. You can apply from anywhere in the world regardless of nationality. All you need is a passport and an idea.

Read more about it at https://e-resident.gov.ee
Read my article about visiting the world's first e-Residency center here on my blog.