Save a logo as EPS 10 file still is strictly necessary???

I have trouble saving a logo as EPS 10 for the effects that I applied. I looked for the old instructions and no longer appears or, at least, I do not get it as a strictly necessary thing. Someone knows if that already changed?. Anybody could send me a link to confirm it? Gracias.

Not sure but this may help:

Excellent reference. Thanks a lot.:+1: