Generally, a resume is much shorter in length compared to a CV, usually limited to one page. It is meant to be a very brief synopsis of your career and education history. Resumes should focus on measurable accomplishments rather than soft skills or listed responsibilities. Like a CV, resumes need to be updated, but those updates should be made form specific job to which you are applying.
Objective Statement. The objective statement is somewhat antiquated since online applications have evolved. Unless you’re sure that your resume is going directly into the hands of the hiring manager or recruiter, an objective statement is not necessary. If you like the idea of an objective statement, consider adding a professional summary statement instead. While an objective statement explains what you hope to accomplish, a summary statement explains who you are and what you have already accomplished. It also positions you to be desirable to the company, rather than seeming like you are only looking out for what YOU want.