A CV is usually more detailed compared to a resume which is more like an overview of the career of a professional or candidate. A biodata, on the other hand, contains thorough details and offers a complete summary of the life of the candidate along with information about their career. Your resume should not be more than one or two pages, while a CV can be lengthier than two pages. Biodata is generally more than two pages long. Again, your CV should include all your certifications and skills and can be customized for a wider audience, unlike a resume that should contain the latest and relevant certifications. Your biodata can also be customized according to the job requirement.