Mark Fishler oversees product development and strategy for the SBC business portfolio. He has played a key role in SBC's evolution from a regional focus to a Tier 1, national data communications provider, while leveraging SBC's expanding nationwide backbone. In his 11 years with SBC, Mr. Fishler has held a number of management positions, developing data technology solutions for enterprise and small business users. Prior to his current appointment, Mr. Fishler served as Vice President of Data Networking, where he supported the ongoing expansion of SBC's national network and business data services.