Tracking and trigger upgrades of CMS

CMS will upgrade its trigger during the forthcoming 13 TeV run to maintain performance under increasingly challenging pileup conditions due to the success of the LHC machine in delivering high luminosity collisions. In the longer term, a new tracker is proposed for installation around 2023, which will for the first time provide data to be used in the L1 trigger. LHC data taking is expected to continue until well into the 2030 decade. The motives for these developments  and progress towards them will be explained.