Regarding Postini's Google Message Encryption, Google said in an FAQ that it will provide more information about its plans "later this year." However, Swidler said Google plans to continue working with its current partner on this service, Zix Corp., to offer its cloud encryption service as an add-on option to Google Apps. Two other Postini products -- Google Message Filtering and Postini Small Business Edition -- have very small user bases and will be phased out.
After the transition, Postini customers will be able to continue using the Google email security and discovery software in conjunction with their current email clients and server software, such as on-premise Lotus Notes and Microsoft Exchange systems.
The transitions, which are expected to begin in earnest next year, should be "seamless" for those customers who have "straightforward" Postini configurations, he said.
In cases of more complex configurations, customers may need to pay attention to certain areas where some features have been re-architected in Apps, he said.
For now, Google is working on developing tools and utilities that'll help make the transition process "as transparent as possible for users," he said.
For Google Apps customers, the years-long process of transferring -- and improving upon -- Postini functionality has been aimed at making the suite stronger in the areas of the email security, discovery and encryption. Longer term, Google plans to broaden the scope of Apps Vault so that it can also encompass all documents and data contained in the suite, in particular on its Drive online storage component, he said.
Juan Carlos Perez covers enterprise communication/collaboration suites, operating systems, browsers and general technology breaking news for The IDG News Service. Follow Juan on Twitter at @JuanCPerezIDG.