The Oracle Solaris 11.3 software is delivered as Image Packaging System (IPS) packages.
For an introduction to IPS, see Chapter 1, Introduction to the Image Packaging System in Adding and Updating Software in Oracle Solaris 11.3.
To update the operating system, see Updating to Oracle Solaris 11.3.
To update software packages, see Installing and Updating Packages in Adding and Updating Software in Oracle Solaris 11.3.