Google has been trying for years to get businesses to abandon Microsoft Office in favor of what it now calls G Suite, the collaboration-oriented trio of Google Docs, Sheets, and Slides, plus companion apps Gmail and Drive. Microsoft has long been the productivity standard-bearer, with Word, Excel, and PowerPoint, supplemented by Outlook and most recently OneDrive.
Office 365 vs. G Suite: Documents
Office 365 vs. G Suite: Spreadsheets
Office 365 vs. G Suite: Presentations