SOLIS (Synoptic Optical Long-term Investigations of the Sun) is a suite of three innovative instruments that will greatly improve ground-based synoptic solar observations. The Vector Spectro-Magnetograph (VSM) is a compact, high-throughput vector-polarimeter with an active secondary mirror, an actively controlled grating spectrograph, and two high-speed cameras based on silicon-on-CMOS-multiplexer hybrid focal plane arrays. It will measure the magnetic field strength and direction over the full solar disk within 15 minutes. The Full-Disk Patrol (FDP) takes full-disk solar images in various spectral lines and the continuum at high cadence through liquid-crystal tuned birefringent filters. The Integrated Sunlight-Spectrometer uses a fiber-fed spectrograph to measure minute changes of the Sun-as-a-star in many spectral lines. A high degree of automation and remote control will provide faster user access to data and flexible interaction with the data-collection process.