1. the most important or prominent position or place
2. the foremost part or area

Examples

• She has been at the forefront of medical research for decades.
• The company remains at the forefront of technological innovation.
• Environmental issues are now at the forefront of political debate.
• The general positioned his best troops at the forefront of the battle.
• Education reform should be at the forefront of our priorities.
• The artist’s work puts social justice at the forefront.
• New safety measures have moved to the forefront after the accident.