First round – This is your pre-employment screening/assessments and phone interview. Perfect placement for video screening tool (HireVue, WePow, etc.).
Second round – Face-to-face with hiring manager and any other key stakeholders (i.e., people this person might be asked to support from other functions).
Third round (if needed) — Face-to-face or video phone (Skype-type) interview. Executive sign off. Really only needed if your line executive doesn’t have faith in the hiring manager.