How long does a Luma → Hyvä migration take?

Typical timelines:

• Express (lightly customised theme, < 5 extensions): 2 – 3 weeks
• Standard (custom theme, up to 20 extensions): 4 – 6 weeks
• Enterprise (heavy customisation, B2B, multi-store): 8 – 12 weeks

Add 1 week for staging review + regression QA + the production cutover window.