One of the major differences between SUVs and crossovers is the platform. It is important to understand how the platforms differ so that you can then make up your mind about which type of vehicle you want to buy.

Unibody of a crossover
A crossover is built on the car platform or a unibody platform, which is actually a short form of utilized body. Another name of unibody is a unit body. In a unibody, the chassis, body, and the platform are attached together so that they make up the entire structure of the crossover. This construction is what gives the crossover its shape. Steel that is extremely strong is used to make this skeleton for crossovers so that it is highly durable. Another important factor considered is the lightweight aspect. A crossover unibody is lightweight when compared to an SUV, which means it is easier to maneuver than an SUV.

Body-on-frame platform of an SUV
A major difference between SUVs and crossovers is that SUVs are built in a body-on-frame manner. That is, the chassis is built separately and so is the ladder frame. Then these are attached together. The ladder frame that is utilized in SUVs is made with the help of reinforced steel. This makes the SUV sturdy and stronger. This type of platform used by SUVs was typically used by trucks. This is the reason why SUVs are known as pickup trucks because they resemble the structure of a truck in some way because of the inner structure. This makes it a little stiffer to drive when compared to a crossover.

How the platforms help fulfil their purpose?
The differences in platforms means that SUVs and crossovers are able to fulfil their purpose in different ways. The way the SUVs are made indicates how sturdy these vehicles are in comparison to crossovers. SUVs have a durable structure and they are made to last. SUVs are for people who love to go on adventures and who are interested in off-roading. The heavy-duty suspensions ensure that you can easily go on an adventure without missing out on any fun. SUVs are able to handle torsion much better than crossovers. Crossovers are better than normal cars as they have the best of both worlds; the desirable factors of a car and an SUV.

Which one should you choose?
If you are looking for frequent off-roading, then the SUV is a better option although you need to remember that it is on the heavier side. A crossover is a lightweight vehicle that is great if you want maneuverability. They are heavier than cars though. However, since they have the benefits of SUVs, such as the rugged look and more passenger space, they can be great options if you are transitioning from a car. Crossovers, due to their design and platform, have a better fuel economy than SUVs although there are some SUVs that are giving tough competition to crossovers in terms of fuel efficiency. For daily commuting and driving, crossovers are always better.
Since each type of vehicle has their strengths, you want to consider what you will be using your vehicle for before you choose which vehicle to purchase.