SIS Limited provides a comprehensive range of business support services including Security Solutions (manned guarding, electronic and alarm systems), Facility Management (cleaning, technical and pest control services), and Cash Logistics (cash‑in‑transit, ATM replenishment, and valuables management).

The Group operates across India, Australia, New Zealand, and Singapore, with an Indian footprint covering more than 630 districts through 293 offices and extensive ground operations.

As on March 31, 2025, SIS Limited had 35 subsidiary companies and 5 joint venture companies worldwide, including Dusters Total Solutions Services Private Limited as a material subsidiary.