Access to data is all about finding the mechanism to query your data, either through a simple SQL interface, or using hive queries or a query from an indexing engine such as Solr. The access to data here mainly deals with access to your master data, which is your single source of truth. Your access methods could either be many, such as hive scripts, JDBC interfaces, and REST APIs, or they could be a single mechanism that is being used by all teams. You need to make a choice based on your own setup and conditions within your organization.