the most advanced or innovative part of something
la parte más avanzada o innovadora de algo (la parte mas avanzada o innovadora de algo)
"This new design is at the cutting edge of architecture."
"Este nuevo diseño está en la vanguardia de la arquitectura." (este nuevo diseno esta en **la vanguardia** de la arquitectura)
to cause a significant change in a situation or trend
to not do what one said one would do
affecting everyone or everything equally
to agree to something or support an idea
to be the best or most impressive thing in a situation
To try to achieve something with confidence.