There is a selling techniques called "Consultative selling". Can you please explain it to me?

I think it's same as 'solution selling': along with product you have to sell your idea of how to use that product, provide professional advising and help your customer to choose the best option according to their demand and budget.

Consultative selling is an approach that focuses on creating value and trust with the prospect and exploring their needs before offering a solution. The salesperson’s first objective is building a relationship; their second is providing the right product.

Consultative sales often referred to as the consultative sales approach is one in which customer needs are used as the basis for the sales dialogue (also known as “Needs-Based Selling”). It is a critical skill for sellers because competing in the world of selling today means understanding the changing world of your buyers and adjusting your sales approach accordingly to drive meaningful value.