Despite the title, I am afraid that I will not be able to really do justice to the broad topic I was given to review. But I will show the current striking level of precise consistency between the CMB and LSS data \textit{within the \LCDM\ theoretical framework} (with the acronyms CMB and LSS standing for Cosmic Microwave Background and Large Scale Structures). This part is largely based on the recent preprint "Planck 2018 results. I. Overview, and the cosmological legacy of Planck" where I had a chance to express my views at length on these topics :-).
Then after briefly recalling some of the currently open questions that cosmology will soon help address, as well as the tensions between some experimental results, I offer a short overview of experimental prospects which will insure that cosmology will remain as exciting in the coming decades as it has been in the last five!