The success of the High Energy Physics community in addressing the challenge of LHC computing and software is borne out by the plethora of beautiful physics results shown at the ICHEP 2020 conference, and in dozens of similar meetings since 2010. Underpinning all of these results is the computing power and storage resources provided by the Worldwide LHC Computing Grid and the expertise embedded in millions of lines of software. The HL-LHC era poses two formidable challenges to those working on HL-LHC computing and software: the very significant increase in event rate and complexity from the LHC; and the increased heterogeneity of commercial computing hardware. The computing and data handling track of the ICHEP 2020 conference provided many interesting avenues of research for how these challenges can be addressed. They are summarised in these proceedings.