Homeowner removed linoleum & half inch wood fiber board to get down to the 3/4″ subfloor. We leveled/tightened a few areas, installed 1/2″ cement board (to bring up the overall height to match the door threshold), and installed the ceramic tile. We used a little more mortar than expected because we spread it on the cement board as well as the tile (to get a better bond).
In addition to this entryway floor, we also laid the same tile in a nearby bathroom. That application only required 1/4″ cement board due to the height of the doorway.
All in all, this job took about one week. Fun stuff and a great looking result!