Hi, I just wanted to make sure these two pics that I have posted are my front and rear jack points. This is for a 2018 is300 awd. The first one is for front Jack and second is for rear jack point.

 

With regards to jacking points, and without checking the Owners Manual, the official jacking points are usually along the rocker panel...behind the front wheels, and in front the rear wheels.
If the Owners Manual does not specify any other locations, then those are the designated places to left the vehicle. Basically the places the hoist is lifting your vehicle in the second pic.

However, there are other areas of the vehicle that will support being jacked on without causing damage to the vehicle.
The pic of the front location you have would appear to be fine as it's the subframe for the front.
For the rear you want to aim for the subframe to which the rear suspension bolts to...see pic below with red oval.

 

I want to jack up front of car then put jack stands on side of car. Then jack up back of car and put jack stands on the back side. So, the whole car will be on four jack stands, so I can do an oil change and whatever I need to do underneath the car and tire change. The owners manual says rear differential. I am not sure if I circled the rear differential in my second picture of my previous post.

 

How do you jack up your car for tire change? Please help.

 

Ok...so the manual does have jacking points for front and rear.
The part you circled in yellow is the diff., as indicated in the manual.
Personally i'd be leary jacking on the actual diff. housing, despite what the manual says...but that's just me.
The cup of the jack should ideally have some type of cushioning insert so that it's not just metal on metal...that way paint is not scratched off or parts permanently marked.

You can use either area circled for the rear.
Personally I haven't had need to jack the entire back or car off the ground...I just do one wheel at a time for tire changes.
I have jacked my Highlander rear completely off the ground to do brakes, and where I circled on the IS pic is where I jacked the Highlander.
The subframe designs are not the vastly different in that particular spot.

 

Ok thanks. I was thinking about subframe but manual says rear differential. I was not sure if I highlighted rear differential. But I am not sure about manual.

 

I wasn't particularly keen on the pic of the LSD diff. where they basically have you jacking on the cooling fins.
I guess if you used a piece of wood or some rubberized pad of some kind, so it helps distribute the contact patch and provides a little cushion so it's not straight metal on metal.

 

The front point is correct. The rear I jack right on or in front of those 2 bolts. Be VERY careful lowing the front, you must have the jack arm all the way down or your bumper will just damaged. You might even want to use hydro jacks on the sides after removing the jack stands before pulling out the front center jack.