Online service suites and individual services are generally offered in several variations or levels, with the predominant differences being technical features, price, and use rights for related on-premises products. Technical feature differences can include personal and group productivity features, as well as archiving, retention, eDiscovery, management, and security capabilities.

Levels of plans, usually denoted by increasing numbers, are generally packaged in a Russian Doll fashion, with the higher-level plans offering a feature superset of the plans below it.

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