o house their data in the cloud with Redshift and also choose a SaaS BI provider (full cloud environment)
o use Redshift for data warehousing and use an on-premise BI solution (hybrid cloud environment)
o keep their data warehouse on-premise but go with a SaaS BI provider (another kind of hybrid cloud environment)
o use Redshift plus BI that's not SaaS but is hosted in the cloud (marrying cloud + a traditional BI license model that's simply deployed on cloud servers rather than in-house servers)