Some of the reasons why to go with SAP HANA –
Real-Time – It offers Real-time Reporting and Real-Time Data Provisioning.
Speed – SAP HANA offers high speeds processing on a large amount of data because of its In-Memory Technology.
Any Data/Source- SAP HANA can access different data source including Un-Structured and structured data from SAP or Non-SAP data source.
Cloud- SAP HANA application and database will be deployed to the Cloud environment.
Simplicity – SAP HANA decreases efforts behind Data Aggregation, ETL process, Indexing and Mapping.
Cost – SAP says that SAP HANA software will decrease the total IT value of the enterprise.
Choice option – SAP HANA is supported by different hardware vendor and software provider, so based on the requirement, the user can choose the best option
You can enroll for best SAP HANA certification where you'll study from basics to professional level concepts in just one course.
I’ll mention a link for SAP HANA interview questions which would be beneficial for you.