Hamilton was never challenged on the way to his 41st win from pole position, surpassing a record he shared with seven-time world champion Michael Schumacher.
The rest of the race kept going without incident and that meant Hamilton would cruise to his 63 career victory with team mate Valtteri Bottas a fair way back in second.
"In the next few days there will be meetings and we don't know if the same tyres will be used in France and Britain".
In contrast to his emotions in the aftermath of the Azerbaijan Grand Prix, Hamilton explained that he "didn't leave anything on the table" during the 66-lap race in Spain. "We weren't happy with our cars" performance and we needed to sort it out.
We've seen the wings get bigger, smaller, wider, higher, lower and a combination of all of these, but the feeling coming out of the F1 technical camp is that this time the changes proposed have been better researched than anytime before.
"Of course we do not want to lose him, but I also believe that he doesn't want to go somewhere else". "It's the greatest feeling to have that kind of performance and a convincing win". Struggling with his tyres, Vettel would pit on lap 17.
Giovinazzi will be joined in the Sauber C37 by Charles Leclerc, while Haas' Romain Grosjean will be the first out for the American team - they are yet to confirm their Wednesday driver. "It's really important that we all continue to push and work as hard as we have done during this first part of the season".
"I was pushing every single lap using it as a test bench to understand what I liked about the balance and how can I play with it more and how can I squeeze more out of it and do all sorts to understand what more I can get from".
The slow-speed nature of the most famous race on the F1 calendar is one which played into Ferrari's hands last term as Vettel led Kimi Raikkonen home in a one-two finish. I'm very interested to see what happens in Monaco next time out as they should be in better shape in qualifying. Daniel Ricciardo, who also had a relatively quiet race, rounded up the top five.
"Of course they knew it would do because they said it was going to work but when they go away and do their expertise and come back on certain area on the vehicle you'll start to see the benefits from it".
F1 bosses held talks with Silverstone over staging the sport's 1,000th championship race there next year.
Red Bull Racing might not be leading the grid, but these two are certainly the cars to watch.
Valtteri Bottas appeared a dead man walking after he courted criticism for failing to make Vettel sweat in their battle for the lead back in Bahrain.