Learn Italian: Il progetto è fallito ieri. Malgrado ciò, il mio socio non si arrende. - The project failed yesterday. Despite this, my partner is not giving up.

The word malgrado alone is a preposition or conjunction that usually connects directly to a noun (like malgrado la pioggia) or a subjunctive verb (like malgrado piova). By adding ciò (this/that), we create a transitional phrase meaning "despite this" or "nevertheless." This allows you to start a brand new sentence with a standard indicative verb, avoiding the need for a complex subjunctive structure.

Could I swap malgrado ciò for ciononostante in this sentence?

Yes, they are perfectly interchangeable here. Both malgrado ciò and ciononostante are formal connectors used to introduce a counter-argument. They both link two independent sentences and are followed by the indicative mood, so the rest of the sentence would stay exactly the same.

Why does fallire take essere (è fallito) instead of avere in the passato prossimo?

In Italian, intransitive verbs that express a change of state, an outcome, or an event generally use essere. fallire (to fail) falls into this category, just like succedere (to happen). Remember that because it uses essere, the ending of the past participle must agree with the subject, giving us the masculine singular -o in fallito to match il progetto.