Under the leadership of CEOs Jack Welch and Jeff Immelt, GE transformed from an American manufacturer into a global conglomerate with diverse business units including energy, aviation, healthcare, and media. Welch grew earnings from $12 billion to $280 billion from 1981 to 2001. Immelt launched marketing campaigns like "Imagination at Work", "Ecomagination", and "Healthymagination" to communicate GE's focus on innovation and technology. As a predominantly B2B company, GE's success relies on establishing itself as an innovative brand through effective B2B marketing.