Leicester City's heavy financial backing has been the key to their emergence as promotion contenders, says Malky Mackay.
Mackay said City, who the league leaders face at the King Power Stadium on Saturday, are promotion rivals because the backing of the club's Thai owners has allowed them to strengthen their squad in every transfer window.
While some Championship clubs have had to sell assets in order to improve, Mackay said City have been able to add to their existing strengths and still add quality.
"They have, like us, a squad rated among the best in Championship football," he said.
"Leicester are a club who have built steadily and have had serious backing over the last few years. They have been able to add to their squad.
"The key factor is that Leicester have had the backing to do that without taking away top players. Key players have stayed and they have strength in depth.
"Managers there have trimmed where they felt it was needed, but have not been forced to lose players they wanted to keep. That's the biggest factor for them as they built their squad."
After losing their 100 per cent home record last week against bottom-of-the-table Peterborough United, which was the biggest shock of their season, Mackay said his side had to refocus quickly as they face three promotion contenders over Christmas.
After their visit to Leicester, Cardiff then face Blackpool and Millwall, who beat City last weekend at The Den.
"To be in the promotion places at this stage and gelling together as a team is what we were aiming for," he said.
"That's a good feeling, but we have to keep our eyes on the ball and chalk off one game at a time. Nobody is getting carried away.
"It's steady as she goes within the camp.
"We can reflect at our progress so far and feel we have done a solid job as a group. But we have to stay consistent and stay focused.
"The next game is against Leicester and that's the only one which counts right now."