html5 - Do I still need woff or eot if I'm using fonts.com? -

html5 - Do I still need woff or eot if I'm using fonts.com? -

i'm not sure if mis-understood how services fonts.com or google fonts work. created website. in html, embedded javascript snippet so:

<script type="text/javascript" src="http://fast.fonts.com/jsapi/somelongapiekey"></script>

once did that, reference new font families in css font-family:'some new font font.com';.

just recently, client's backend developer asked me give him woff , eot files fonts i'm using. told him dont have them because i'm using fonts.com. responded asking, "then how able fonts work in other browsers? don't need woff , eot files create work on major browsers?"

did mis-understand something? assumed fonts.com takes care of cross browser compliance , other issues haven't considered. client's developer need eot/woff files other reasons haven't considered?

the developer didn't realize how these services worked. explained him.

html5 fonts