Eso es

[Caballero]

¿Qué significa?

[ElPolloEstreñido]

I use it for " that's it."

[AngelicaDeAlquezar]

Many people use it to say "I see", "I understand", "I agree"...

[aleCcowaN]

That is it.
It is that.
That is ...
You got it.
That is what I'm saying.
That is to say.
Namely.
Very good.
Well done.
Way to do.

Con gusto no hubiera contestado yet another pregunta carente de contexto, pero me temo que otro encuentre este hilo en el futuro y crea que:

1) "Eso es" es las primeras respuestas.
2) Esa es la forma de preguntar en un foro de idiomas.