In Arcmap or ArcGIS, we could use base map as background. Similar, in QGIS, we could use several satellite imageries such as Bing map, Google, or ESRI by install a plugin, called Quick Map service: The detailed steps for installation are described as following:
1-Open QGIS
2-On Menu bar, click on 'Plug in'
3-After Plug in menu pop up search for 'Quick Map Service'. Then click on installation button
4-Next, go back to main Menu bar and click on 'WEB' and choose 'Quick Map Service'
5-Then, go to Setting
6-'More Service'
7-Click on 'Get Contributed Pack' and wait for a while (make sure u have internet connection.
8-Done