Technology being digital

What does a technology (an ICT) being digital means?

"Technology" itself does not define ICT. So, what is technology?
I'd like to answer this and am excited to do so as I found a clearer picture to this. This article helped me to see the bigger picture of digital technology. Understanding the article was easy because the explanation for analogy technology reveals the behind-the-scene for digital technology.

I recently found out about Snapchat filters and how it works. So to read about digital technology , my points of knowledge gained here and there starts to connect! It makes sense to me as I've sort of seen how digits are used in software.

Is face recognition technology similar to finger print recognition for passports? It is said that face recognition technology has more fine benefits as it can recognize a figure from a far. (NEC) Despite that, there are some things that digital technology can't translate. Hence, the usage of both digital technology and analogy technology should be hand in hand when it comes to delivering lessons to the children.

Regards,
Sarah