I passed exam 402 F5 Certified Solution Expert, I would like to share guide for prepare to exam this certificate, First you have to review blueprint about exam topic from F5: 404 Page not found | BIG-IP Documentation
1. Information about license
2. F5 instance type on microsoft azure and AWS
3. Strategy migration application to cloud
4. Learning about HTTP method for API and API concept
https://community.f5.com/kb/technicalarticles/wils-the-data-center-api-compass-rose/283999
5. About cloud provide object
6. Cloud concept and automation