  Heliophysics image data largely relies on a forty-year-old ecosystem built on
the venerable Flexible Image Transport System (FITS) data standard. While many
in situ measurements use newer standards, they are difficult to integrate with
multiple data streams required to develop global understanding. Additionally,
most data users still engage with data in much the same way as they did decades
ago. However, contemporary missions and models require much more complex
support for 3D multi-parameter data, robust data assimilation strategies, and
integration of multiple individual data streams required to derive complete
physical characterizations of the Sun and Heliospheric plasma environment. In
this white paper we highlight some of the 21$^\mathsf{st}$ century challenges
for data frameworks in heliophysics, consider an illustrative case study, and
make recommendations for important steps the field can take to modernize its
data products and data usage models. Our specific recommendations include: (1)
Investing in data assimilation capability to drive advanced data-constrained
models, (2) Investing in new strategies for integrating data across multiple
instruments to realize measurements that cannot be produced from single
observations, (3) Rethinking old data use paradigms to improve user access,
develop deep understanding, and decrease barrier to entry for new datasets, and
(4) Investing in research on data formats better suited for multi-dimensional
data and cloud-based computing.
