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Since its launch in 2008 June, the Fermi Gamma-ray Space Telescope has openeda new era in high-energy astrophysics. The unprecedented sensitivity, angularresolution and effective area of the Large Area Telescope on board Fermi,together with the nearly continuous observation of the entire gamma-ray skyassures a formidable opportunity to study in detail gamma-ray emitting AGN ofvarious types. In this context the Swift satellite, thanks to its broad bandcoverage and scheduling flexibility, creates a perfect synergy with Fermi.  Swift and Fermi coordinated monitoring campaigns of radio-loud AGN allowed usto investigate correlated variability at different frequencies and to buildtime-resolved spectral energy distributions from optical to gamma-rays,constraining the emission mechanisms at work in these objects. The rapid Swiftfollow-up observations of gamma-ray flaring AGN detected by Fermi-LAT were alsofundamental in firmly associating the gamma-ray sources with their low-energycounterparts. We present some interesting results obtained from Fermi-LAT andSwift observations of gamma-ray flaring AGN in the first six years of Fermioperation.

The multi-faceted synergy between Swift and Fermi in radio-loud AGN studies