ATLANTA--(BUSINESS WIRE)--Venture Atlanta, the premier technology conference and largest investor showcase in the Southeast, today issued a call for presenters for its annual conference to be held on October 20-21, 2015, at the Georgia Aquarium. To date, companies that have presented at Venture Atlanta have raised more than $1.5 billion—an amount that continues to grow. In addition to the opportunity to pitch on-stage, selected companies will receive exposure to the entire technology ecosystem,