A2A Security is a professional security guard and concierge services company serving the Greater Toronto Area, including Toronto, Ajax, Pickering, Markham, Richmond Hill, Vaughan, Brampton, Mississauga, Milton, and Oakville. We specialize in providing reliable, on-site security solutions tailored to property management companies overseeing residential towers, condominiums, and apartment complexes, as well as office buildings, corporate facilities, retail stores, industrial sites, and warehouses.