This is serving dish. It can be called a serving platter, but it can also be called a plate, a platter, or a dish.

Serving platters are large, flat dishes used for serving food. They are available in a variety of materials, including ceramic, glass, wood, and plastic. The green platter in the image you sent appears to be made of ceramic or melamine.

Here are some other things to consider when choosing a serving platter:

Size: The size of the platter you choose will depend on how much food you need to serve. A small platter may be sufficient for serving appetizers or desserts, while a large platter will be necessary for serving main courses.
Shape: Platters come in a variety of shapes, including round, oval, rectangular, and square. The shape of the platter you choose will depend on your personal preference and the type of food you will be serving.
Design: Platters come in a variety of plain and decorative designs. You may want to choose a platter that complements your existing serveware or that has a design that matches the occasion.