doc The .doc filename extension is a native file extension used by the closed source document processing application Microsoft Office Word. Initially developed and used by Microsoft since 1983, the filename extension .doc continues to be supported natively even in the most recent iteration of the word processing application Microsoft Office Word 2013. The more recent .docx filename extension however was introduced by Microsoft in Office Word 2007, becoming the default filename extension. Documents to be saved in the .doc format are saved as Word 97, 2003 documents.
ott OTT file extension is saved as a document template in a standard format. The file format was originally designed for use in office suites, word processing applications, LibreOffice and OpenOffice. Text document samples contained in files ending with the OTT file extension allows users to set and design layouts and apply numerous settings to documents. The layout and settings are applied to the documents without editing their contents or forming them from scratch.
The OTT file type is specifically designed for users who want to create quick and easy documents, presentations, get appropriate settings and formatting options without disrupting the layout and previous settings of the files. This format is useful for occasions where documents are shared through collaboration between colleagues or groups where the content editing without interrupting the layout and format of documents.