Breakdown of Вся информация круглосуточно доступна любому пользователю.
информация
information
любой
any
пользователь
user
весь
all, the whole, everything, everyone
Questions & Answers about Вся информация круглосуточно доступна любому пользователю.
Why do we use любому here instead of каждому?
Любой means "any" in the sense of a totally free choice—it doesn't matter who the user is. Каждому means "every" or "each" individual user. While they are similar, любому пользователю emphasizes that there are absolutely no restrictions on who can access the information.
Could we say Любая информация instead of Вся информация at the start of the sentence?
You could, but it changes the meaning. Вся информация means "all the information" in its entirety. Любая информация would mean "any piece of information" (whichever one you pick). In this context, stating that "all of it" is available makes more sense.
What case is любому пользователю in, and what triggers it?
It is in the dative case. The adjective доступна (available) requires the dative case to show to whom the thing is available. Любой declines just like a standard adjective, taking the -ому ending for masculine dative.
Why is доступна used instead of the full adjective доступная?
In Russian, short-form adjectives are often used as the predicate of a sentence (the main verb or action), especially to state facts or conditions. Here, доступна simply states the fact that the information "is available."