What is certified translation?
Certified translation is a translation which is done by licensed translator for a particular language. For example licensed translator for French and English language can provide certified translations of French birth certificate into English.
Why are certified translations required?
Translations can be certified or simple un-certified translations. The requirement of certified translation depends on the organization to which you will be providing your document. If this organization requires certified translation then you will need to order the translation from a certified translator.