geboten
required
Necessary, appropriate, or advisable in a particular situation.
Angesichts des schlechten Wetters ist besondere Vorsicht geboten.
In view of the bad weather, special caution is required.

required / offered
Loading your saved state.
required
Necessary, appropriate, or advisable in a particular situation.
Angesichts des schlechten Wetters ist besondere Vorsicht geboten.
In view of the bad weather, special caution is required.

'Geboten' is the past participle of the verb 'bieten' (to offer) or of the less common verb 'gebieten' (to command, require). The different meanings are derived from these two origins.
Er hat mir seine Hilfe geboten.
He offered me his help.
The meaning depends on the word's position in the sentence. If 'geboten' comes at the end of the sentence after 'ist' (is) or 'scheint' (seems), e.g., 'Vorsicht ist geboten' (caution is required), it means 'required.' If it comes before a noun, e.g., 'die gebotene Chance' (the offered opportunity), it means 'offered.'
In dieser Situation ist Geduld geboten. (erforderlich)
In this situation, patience is required. (required)
The meaning 'required' or 'advisable' almost always appears in the fixed structure '[noun] ist geboten' ([noun] is required). The noun is in the nominative case.
Bei Glatteis ist höchste Vorsicht geboten.
In icy conditions, the utmost caution is required.
In the meaning 'offered,' 'geboten' is often combined with nouns that describe an opportunity or advantage. Typical examples are 'die gebotene Chance' (the offered chance), 'die gebotene Gelegenheit' (the offered opportunity), or 'die gebotene Hilfe' (the offered help).
Er nahm die gebotene Hilfe dankend an.
He gratefully accepted the offered help.
necessary
'nötig' and 'geboten' can both express that something is needed or right in a situation. 'nötig' is the normal everyday word when something is required in order to achieve a goal. 'geboten' sounds more formal and emphasizes more strongly that something is appropriate or advisable, often because of a rule, danger, or special situation. In everyday language, people usually say 'nötig'. 'geboten' fits better in official, serious, or elevated contexts.

Im Zug ist Ruhe geboten, weil viele Fahrgäste schlafen möchten.
Quiet is required on the train because many passengers want to sleep.
Für den Termin ist kein neuer Antrag nötig.
No new application is necessary for the appointment.