For most of us, writing a CV is a task we only think about when we are looking for a job. Yet, as academics, you need a CV for almost everything you do - promotion, grants and proposals, industry, as well as looking for your next job.
The requirements for each of the uses is different too.
Looking for an academic job will need a focus on your academic credentials.
Promotion, will need to include a range of areas set out by your university. These probably include teaching, research, grants, publications, administration, industry engagement and international collaboration (to name a few).