A marketing strategy is a long-term plan for achieving a company's goals by understanding the needs of customers and creating a distinct and sustainable competitive advantage.
It encompasses everything from determining who your customers are to deciding what channels you use to reach those customers.
Marketing objectives are a set of clearly defined, measurable goals established as part of a marketing plan.
Marketing objectives provide specific targets to be met within a time frame, such as “decrease customer acquisition cost by 10% by the end of next quarter.”