The correct answer is Agility. Agility in cloud computing refers to the ability to quickly and easily make adjustments to IT resources, which allows for faster deployment of applications. In this case, the company's deployment cycle was significantly reduced from 3-4 weeks to 2-3 days after migrating to AWS Cloud, demonstrating an increase in agility. Elasticity refers to the ability to scale resources up or down based on demand, which is not directly related to the deployment cycle time. Flexibility generally refers to the ease of making changes to the IT environment, but in the context of this question, agility is more specifically related to the speed of deployment. Resilience is about the ability of a system to recover from failures, which is not mentioned in the scenario.