The choice to go with some of the low-cost plans in Office 365 - Office 365 F1, Exchange Online Plan 1, Business Essentials or Business Premium - brings with it the risk of missing out on the defensive capabilities around Advanced Threat Protection and anti-phishing that help keep the organization's data and systems safe. One other area overlooked by IT when adopting a less-expensive Office 365 license is the advanced security, which is only available as an add-on for those plans. Basic plans don't offer desired security features Backup is critical and every business moving to Office 365 should look at the offerings from third-party vendors such as SkyKick, Datto and Veaam in their Office 365 backup subscriptions for data protection.

Many organizations ignore the lack of backup functionality until users lose email that even Microsoft support cannot recover. Microsoft provides recovery services going back up to 44 days for deleted email or mailboxes. It might be hard to believe, but Office 365 does not offer a backup service to its users. Lack of email backups presents a risky scenario For organizations moving from an Exchange Server on-premises configuration to Exchange Online or the full Office 365 suite, there are several key areas that are critical to the organization's success that don't always get the appropriate attention until the questions from users start rolling in when the migration is done.

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