Why businesses manage their time with Google Calendar
Get people together easily - Just pick a time (based on when people are free) and enter meeting details. Google Calendar will send invitations and keep track of RSVPs.
Keep all your important email - 25 GB of storage per user lets you keep just about anything you think may be important down the road.
Share project calendars - Share whole calendars company-wide or with specific people. Coworkers can have editing rights and see shared events alongside their own schedules.
Show event information in context - Embed an internal calendar in Google Sites or publicly on your website, no programming required.